Timeline

Timeline

Upcoming conferences from today onward, in chronological order. Ended events live in the archive.

Browse by category
Today July 15, 2026
July 2026 9
  1. 7/16 (Thu) – 17 tech Tokyo

    Developers Summit 2026 Summer

    The summer edition of Developers Summit (Devsumi), a conference for IT engineers hosted by Shoeisha. Two days of technical sessions and exhibits themed on engineers' contribution to business, co-located with IT Strategy Summit 2026.
  2. 7/20 (Mon) programming Tokyo

    PHP Conference Japan 2026

    The annual gathering of Japan's PHP community and one of the country's oldest language conferences, first held in 2000. Run by a volunteer committee tied to the Japan PHP Users Group at Ota Industrial Plaza PiO, its home since the first edition. Despite free admission, it packs around 30 accepted talks across multiple tracks, ranging from AI-era development and legacy code to PHP internals such as OPcache and JIT, making it a fixed point for observing where Japan's PHP community stands.
  3. 7/22 (Wed) – 23 ai Tokyo

    AI DevEx Conference 2026

    A conference on developer productivity and developer experience in the AI era, hosted by Findy as the successor to its Developer Productivity Conference. Under the theme "the future of development productivity and engineering organizations in the AI era," 56+ speakers discuss the relationship between AI and organizations and the evolution of development platforms. Engineering leaders from global big tech companies also take the stage.
  4. 7/22 (Wed) – 24 game Kanagawa

    CEDEC 2026 (Computer Entertainment Developers Conference)

    Japan's largest conference for game developers, running since 1999. Roughly 200 sessions span engineering, visual arts, sound, and game design, making it the country's central gathering of game and entertainment development expertise. The 2026 edition again runs three days at Pacifico Yokohama North in hybrid format with online attendance.
  5. 7/22 (Wed) – 24 dx Chiba

    DX Comprehensive EXPO 2026 Summer Tokyo

    The summer edition of one of Japan's largest comprehensive DX exhibitions, bringing together DX solutions for operational efficiency, work style reform, and business infrastructure. Visitors can compare products across SaaS, AI, RPA, cloud, and security for free. Following the Spring 2026 edition in February, the series draws over 100,000 visitors annually across Tokyo, Osaka, and Fukuoka.
  6. 7/23 (Thu) – 24 ai Online

    AI Agent Day 2026 Summer

    One of Japan's largest AI agent conferences, hosted by the AICX Association. Under the theme of "complete case-study dissection," two days of sessions unpack real enterprise deployments and the common walls of AI agent adoption, such as stalled rollouts, over-reliance on individuals, and unmanaged "rogue agents." The past three editions drew over 12,000 cumulative viewer registrations.
  7. 7/29 (Wed) – 30 tech Kanagawa

    KubeCon + CloudNativeCon Japan 2026

    The Japanese edition of the world's largest Kubernetes and cloud-native technology conference. Hosted by CNCF, it features two days of keynotes, sessions across 10+ tracks, tutorials, and networking. All sessions are later published on the CNCF YouTube channel.
  8. 7/30 (Thu) – 31 cloud Tokyo

    Google Cloud Next Tokyo

    The largest Google Cloud conference in Japan, featuring the latest technologies and case studies for Google Cloud and Workspace. Includes keynotes, technical sessions, and hands-on labs. 13,000 attendees in 2025.
  9. 7/31 (Fri) – 8/1 developer Osaka

    Scrum Fest Osaka 2026

    The Kansai region's largest Agile and Scrum conference, running since 2019. During the pandemic in 2020 it pioneered an online format where Scrum communities across Japan gathered as individual tracks, becoming a hub connecting regional communities. The 2026 edition is a hybrid event at Umeda Crystal Hall, with a keynote by Ryutaro Yoshiba (Attractor).
August 2026 6
  1. 8/8 (Sat) game Tokyo

    Tokyo Game Dungeon 13

    An indie game exhibition for solo developers and small teams, launched in 2022 by indie developer Takumi Iwasaki and held three to four times a year in Hamamatsucho. The 13th edition hosts 276 booths, reserving 100 slots for first-time exhibitors to keep the barrier to entry low. With 1,000 yen admission (free under 18), it has grown to around 3,000 visitors focused on playtesting and developer exchange.
  2. 8/21 (Fri) – 23 programming Hiroshima

    PyCon JP 2026

    Japan's largest conference dedicated to the Python programming language. Python developers from Japan and abroad gather to share knowledge across web development, data science, machine learning, and automation. Since its first edition in 2011, the event has drawn around 1,000 attendees annually, growing into one of the leading PyCon events in the Asia-Pacific region. The conference spans two days plus a sprint (development hackathon) day.
  3. 8/26 (Wed) – 27 ai Tokyo

    AI Expo Summer 2026

    The summer edition of the AI-focused exhibition hosted by AIsmiley, operator of Japan's AI portal media. Over 100 companies present 200+ AI solutions alongside 40+ conference sessions. Following the Spring 2026 edition at Tokyo International Forum, it moves to Sankaku Hiroba at the Shinjuku Sumitomo Building. Free to attend, it serves companies comparing generative AI and AI agent products.
  4. 8/27 (Thu) – 28 deeptech Tokyo

    Innovation Japan 2026 (University Trade Fair)

    Japan's largest university-industry matching event, hosted by the Japan Science and Technology Agency (JST). Patented technology seeds from universities nationwide are exhibited for matching with corporate R&D and new business teams. The 2025 edition drew about 14,000 visitors to 291 exhibited seeds. Less a startup conference and more a trade fair that seeds technology transfer and joint research.
  5. 8/29 (Sat) open-source Tokyo

    Open Developers Conference 2026

    A developer-focused open source conference run by the OSPN community behind the Open Source Conference (OSC) series. Billed as an "open source culture festival," it packs seminars, hands-on sessions, and community booths on DevOps, dev tools, and cloud into a single free day. Modest in size at 100-plus attendees, its strength since 2018 has been direct access to the developers behind OSS projects.
  6. 8/31 (Mon) – 9/3 startup Kyoto

    ICC Summit (Industry Co-Creation Summit)

    A conference built on 'learning together, creating industry together.' The signature event is 'Catapult,' a 7-minute pitch contest. Held twice yearly (Fukuoka/Kyoto). Over 80% of attendees rate it 'the best.'
September 2026 12
  1. 9/1 (Tue) – 3 tech Tokyo

    DroidKaigi 2026

    One of Japan's largest Android conferences, organized by engineers for engineers. Three days of technical sessions, codelabs, and networking, with many international speakers making it a globally minded technical event.
  2. 9/2 (Wed) – 3 deeptech Tokyo

    TECHNIUM Global Conference 2026

    Japan's largest deep tech conference. By invitation only, it brings together researchers, entrepreneurs, investors, and corporations from the deep tech ecosystem worldwide. Discussions cover the societal implementation of advanced technologies including bio, materials, energy, and space.
  3. 9/5 (Sat) startup Miyagi

    DATERISE! 2026

    A global startup event from Tohoku hosted by Sendai City. It combines a pitch contest, exhibitor booths, and festival-style side events, engaging everyone from startups to local residents. First held in 2025 with over 2,300 total participants including side events. The 2026 edition consolidates venues into the Sendai International Center Exhibition Hall and scales up.
  4. 9/11 (Fri) cloud Tokyo

    Cloud Operator Days Tokyo 2026

    An annual conference dedicated to cloud infrastructure operators. Launched in 2020 as the successor to OpenStack Days Tokyo, it focuses on sharing successes, failures, and know-how from operations. Typically combining summer on-demand sessions with an in-person closing event, the 2026 finale takes place September 11 at docomo R&D OPEN LAB ODAIBA in Odaiba.
  5. 9/11 (Fri) programming Tokyo

    Go Conference 2026

    Japan's largest community conference dedicated to the Go programming language, run by the Gophers Japan association. Sessions span language internals, concurrency, and cloud-native practice under the 2026 theme "Go Far, Go Together." With recent editions drawing 450-500 attendees, it serves as a hub for the country's Go engineers.
  6. 9/11 (Fri) – 13 tech Tokyo

    iOSDC Japan 2026

    One of Japan's largest software engineering conferences focused on iOS and related technologies. Knowledge on Swift and Apple platform development comes together over three days in a hybrid format, with a distinctive culture of publicly submitted talk proposals.
  7. 9/11 (Fri) innovation Tokyo

    OPEN INNOVATION SUMMIT 2026

    One of Japan's largest open innovation summits, hosted by eiicon. Large corporations, startups, municipalities, and investors gather for sessions and the STARTUP PITCH program, generating business co-creation matches. A distinctive feature is that corporate judges make on-the-spot co-creation decisions during the pitch. Around 2,000 attendees expected.
  8. 9/11 (Fri) – 12 developer Aichi

    Scrum Fest Mikawa 2026

    An Agile and manufacturing conference held in Toyohashi, in the Mikawa region known for its concentration of manufacturers. It is distinctive for crossing hands-on hardware development knowledge with software Scrum practice, drawing corporate engineers and students from the Tokai area. The 2026 edition at emCAMPUS STUDIO features a keynote by Masaki Nakamura of Aisin, who leads the communication-support app YYSystem.
  9. 9/12 (Sat) developer Fukuoka

    Frontend Conference Fukuoka 2026

    A regional conference gathering front-end developers across Kyushu, held at Kyushu Sangyo University with sessions on UI implementation, performance, and architecture. Run by a volunteer committee, it draws roughly 200-300 attendees and anchors Kyushu's engineering community as a regional counterweight to Tokyo-centric events.
  10. 9/17 (Thu) – 21 game Chiba

    Tokyo Game Show 2026

    The world's largest game trade show, organized by CESA. Marking its 30th anniversary, the 2026 edition expands to an unprecedented five days, with two business days followed by three public days. Recent editions drew 770-plus exhibitors and 240,000-plus visitors, spanning games, XR, AI, and esports. It is the year's largest venue for Japan's game industry to do business and reach the public.
  11. 9/23 (Wed) – 27 startup Hokkaido

    NoMaps 2026

    A city-wide festival across central Sapporo spanning conferences, exhibitions, music, and film. Modeled after SXSW and launched in 2016, the 2025 edition drew a cumulative 58,000 participants across 86 venues and 294 programs. A hub event of Hokkaido's startup ecosystem where entrepreneurs, creators, students, and local governments mix.
  12. 9/26 (Sat) cloud-native Tokyo

    Platform Engineering Kaigi 2026

    The third edition of Japan's conference dedicated to platform engineering. The 2026 theme is "AI Native Platform Engineering," sharing hands-on knowledge of building developer platforms that embed AI agents. Grown out of the Platform Engineering Meetup community in 2024, it draws platform engineers, SREs, and CTOs.
October 2026 16
  1. 10/5 (Mon) – 7 deeptech Osaka

    Global Startup EXPO 2026

    An international deep tech startup event first held at Expo 2025 Osaka, Kansai. As an Expo legacy project, the 2026 edition continues at the Umekita area in central Osaka. Focus areas span bio, AI and robotics, fusion energy, quantum, semiconductors, and space, connecting overseas startups with Japanese corporations, investors, and research institutions. The 2025 edition drew over 9,500 visitors with 145 booths from 21 countries and regions.
  2. 10/5 (Mon) – 8 security Hokkaido

    Hardening 2026 Agentic Collapse

    An annual security hardening competition where teams defend an e-commerce site under live attack, competing on business continuity and sales. Japan's foremost hands-on exercise since 2012, with selected participants forming mixed teams. In 2025, 101 took part, 90% first-timers. The 2026 edition moves to Hakodate under the theme "Agentic Collapse," testing defense in the AI-agent era.
  3. 10/7 (Wed) – 9 biotech Kanagawa

    BioJapan 2026

    One of Asia's largest biotechnology partnering events. Pharma and biotech companies, regenerative medicine and healthcare players, researchers, investors, and startups gather for one-on-one partnering meetings via a dedicated system. In 2025, 1,090 exhibitors from 36 countries and regions joined, with over 22,000 visitors and 24,000 partnering meetings. Co-located with events such as Regenerative Medicine JAPAN.
  4. 10/7 (Wed) – 11 startup Fukuoka

    RAMEN TECH 2026

    A citywide innovation week hosted by Fukuoka City. Centered on the Tenjin-Daimyo area, it spreads 100+ events across the city, drawing startups, investors, and engineers from Japan and abroad. The 2025 edition drew over 12,000 participants (1,200+ from overseas). In 2026 it runs five days, October 7-11, targeting 15,000+ participants, offering a panoramic view of the ecosystem of Fukuoka, Japan's self-styled gateway to Asia.
  5. 10/9 (Fri) tech Tokyo

    Data Engineering Summit 2026

    A data engineering-focused conference hosted by Findy. Shares practical cases on data infrastructure, data pipelines, MLOps, and data governance. Data engineers from major domestic tech companies present real-world insights from the field.
  6. 10/10 (Sat) – 11 design Tokyo

    Designship 2026

    Japan's largest design conference, built on the concept of "reconnecting design that has spread too far." Held annually since 2018 around the stories of practitioners crossing UI/UX, graphic, and product design, it has drawn over 50,000 cumulative attendees, with about 2,500 visitors over two days in 2025. The 2026 edition takes place at Tokyo Midtown Hall on October 10-11.
  7. 10/12 (Mon) developer Osaka

    Frontend Conference Kansai 2026

    An annual conference by the Kansai front-end developer community. The 2026 theme "Frontend, Unbounded." widens the audience beyond engineers to UI/UX designers and product roles. Organized by the Kansai Developers Conference association, it is held at the new Grand Green Osaka venue directly linked to Osaka Station, anchoring developer exchange in the Kansai region.
  8. 10/12 (Mon) engineering Okinawa

    Hackers Champloo 2026

    An annual engineers' festival run jointly by Okinawa's IT communities since 2013. Built around sessions and lightning talks, its hallmark is a "champloo" (stir-fry) culture where engineers from inside and outside the prefecture mix across specialties. The 2025 edition drew about 140 attendees, free to attend, with even sponsor sessions kept as pure tech talks. In 2026 it shifts from its usual summer slot to October 12 at Tedako Hall in Urasoe.
  9. 10/13 (Tue) – 16 tech Chiba

    CEATEC

    Japan's largest IT and electronics exhibition. Organized by JEITA, held annually in October at Makuhari Messe. The 2026 theme is 'Transformation.' Over 800 exhibitors and approximately 100,000 visitors. Free admission with registration.
  10. 10/13 (Tue) – 16 mobility Chiba

    Japan Mobility Show Bizweek 2026

    A B2B mobility co-creation event hosted by the Japan Automobile Manufacturers Association (JAMA). Held in the interim year of the main Japan Mobility Show (biennial at Tokyo Big Sight, drawing about one million visitors), co-located with CEATEC at the same venue and dates. Focused on business matching among automakers, startups, universities, and cross-industry companies, with the online matching tool Meet-up Box available before and after the show.
  11. 10/16 (Fri) – 17 ruby Tokyo

    Kaigi on Rails 2026

    Japan's largest conference for Ruby on Rails users, positioned as "a web technology conference enjoyable for everyone from beginners to experts" with a strong focus on practical, production-grounded sessions. The 2026 edition features keynotes by Rails creator DHH and "The Pragmatic Programmer" author Dave Thomas, continuing its hybrid format with several hundred on-site attendees.
  12. 10/21 (Wed) – 23 tech Chiba

    Japan IT Week Autumn 2026

    The autumn edition of Japan's largest IT and DX exhibition. Composed of Japan IT Week, Japan DX & AX Week, the Sales & Digital Marketing Week, and the EC & Store Week, it is the largest such show in the second half of the year, with 780 exhibitors. Some 30,000 business professionals gather in Makuhari to compare products and hold meetings across system development, security, AI, and DX. Unlike the spring edition at Tokyo Big Sight, the autumn show is held at Makuhari Messe.
  13. 10/21 (Wed) – 23 security Tokyo

    Security Days Fall 2026

    One of Japan's largest cybersecurity exhibition-and-seminar events, organized by Nano Opt Media. Held twice a year, the autumn edition tours five cities including Sapporo, Osaka, Fukuoka, Tokyo, and Nagoya. It delivers, free of charge, the latest incident trends and defenses against ransomware and targeted attacks for practitioners. The Tokyo venue alone draws cumulative session attendance of around 16,000.
  14. 10/24 (Sat) developer Tokyo

    Vue Fes Japan 2026

    Japan's largest Vue.js conference, organized by the Vue.js Japan User Group. With a scope that "does not close itself to Vue.js alone," it covers Vite, Vitest, AI, and accessibility, featuring creator Evan You and OSS developers from around the world. Over 800 people attended in 2025; the 2026 edition takes place October 24 in Otemachi, Tokyo.
  15. 10/27 (Tue) – 29 tech Online

    Qiita Conference 2026 Autumn

    The autumn edition of the online tech conference hosted by Qiita, Japan's largest engineer community. Streamed over three evenings (17:00 to 20:55), it features guest keynotes and sessions by participating companies sharing technical challenges and insights. The spring 2026 edition drew a record 7,000+ registrations, the largest in Qiita's history. Archive streaming available.
  16. 10/29 (Thu) – 30 mobile Tokyo

    FlutterKaigi 2026

    Japan's largest community conference dedicated to Flutter and Dart. The sixth edition since its 2021 debut runs two days in Hamamatsucho under the theme "Assemble." The 2025 edition drew roughly 300 attendees with a keynote, 20 sessions, and 15 lightning talks, cementing its role as the annual gathering of Japan's Flutter community.
November 2026 18
  1. 11/1 (Sun) product-management Tokyo

    pmconf 2026 (Product Manager Conference)

    Japan's largest product management conference. It contributes to the advancement of product management through knowledge sharing and case study presentations by PMs and PdMs. In 2025, held in Osaka (November) and Tokyo (December). Top PMs from Japan and abroad take the stage.
  2. 11/1 (Sun) developer Miyagi

    TSKaigi Sendai 2026

    A regional edition of the TypeScript conference organized by the TSKaigi Association. Separate from the flagship Tokyo event held each May, these regional gatherings connect with local engineering communities. The Sendai edition runs as a single day on November 1, 2026, offering practical TypeScript knowledge and networking.
  3. 11/4 (Wed) – 6 startup Tokyo

    GRIC 2026 (Growth Industry Conference)

    Japan's largest growth industry conference hosted by For Startups, Inc. Startups, corporations, investors, and government officials gather to discuss the future of growth industries. The first two days are held online, with the final day at Shibuya Hikarie in a hybrid format. Features the GRIC Pitch contest.
  4. 11/5 (Thu) – 7 foodtech Tokyo

    SKS JAPAN 2026

    Japan's largest foodtech conference, co-hosted by UnlocX and the US foodtech media The Spoon. Corporations, startups, investors, and researchers in food and agriculture gather from Japan and abroad, with over 100 speakers and full simultaneous interpretation. Now entering its second stage focused on co-creation and social implementation after nearly a decade since 2017. The 2026 venue is not yet announced (2025 was held at Muromachi Mitsui Hall & Conference in Nihonbashi).
  5. 11/7 (Sat) cloud Akita

    JAWS FESTA 2026 in AKITA

    The annual traveling conference that JAWS-UG, the AWS user group of Japan, holds once a year in a regional city outside Tokyo. The 2026 edition takes place at Akita Arts Theatre Milhas in Akita City, lining up regional cloud case studies and community-driven sessions. The 2025 Kanazawa edition drew roughly 300 registrants, with strongly local programming such as disaster-relief lessons from the Noto Peninsula earthquake. It functions as a hub connecting regional IT communities.
  6. 11/8 (Sun) game Tokyo

    DigiGame Expo 2026

    A doujin and indie-game-only exhibition and market running since 2013, held every autumn at Akihabara UDX. Games across PC, smartphone, and console platforms are sold and demoed in one place. Distinctively, game engines and middleware vendors have been welcomed from the start, and media attendance is high. A long-running event bridging doujin market culture and the indie game industry.
  7. 11/11 (Wed) – 13 startup Fukuoka

    B Dash Camp 2026 Fall in Fukuoka

    The fall edition of Japan's premier invitation-only startup conference. Entrepreneurs, public company executives, and VCs gather in Fukuoka for dense networking built around panel discussions and the Pitch Arena pitch contest. Held twice a year, paired with the spring edition in Sapporo.
  8. 11/11 (Wed) – 13 ai Chiba

    NexTech Week 2026 Autumn

    A large-scale advanced-technology exhibition organized by RX Japan, comprising five shows including AI EXPO, Blockchain EXPO, Quantum Computing EXPO, Humanoid Robot EXPO, and Digital Talent Development EXPO. Centered on the social implementation of frontier technology, it gathers companies from R&D through deployment as a free-entry, business-matching exhibition held each spring and autumn.
  9. 11/14 (Sat) programming Tokyo

    Kotlin Fest 2026

    A Kotlin-focused community conference under the banner "cherishing Kotlin," hosted by the Japan Kotlin User Group. Kotlin engineers share knowledge across Android and server-side in CfP-selected sessions. Running since its 2018 debut, it is the central event of Japan's Kotlin ecosystem.
  10. 11/17 (Tue) – 18 security Tokyo

    CODE BLUE 2026

    An international security conference born in Japan that gathers world-class security researchers in Tokyo. Talks on cutting-edge vulnerability research and attack techniques are fully interpreted, drawing 1,000+ attendees from Japan and abroad. Alongside the main conference, trainings, contests, and villages make it a hub for exchange across borders and languages.
  11. 11/18 (Wed) – 19 tech Tokyo

    CloudNative Days Winter 2026

    Japan's largest cloud-native technology conference hosted by the local community. Shares practical cases on Kubernetes, containers, microservices, SRE, and Platform Engineering. Community-driven with diverse sessions selected through a CFP (Call for Proposals) process.
  12. 11/21 (Sat) security Tokyo

    AVTOKYO2026

    A community security conference running since 2008 under the motto "no drink, no hack." Held in a Shibuya nightclub, it is known for its unique style where hackers from Japan and abroad mingle over drinks. Talks center on edgy topics from cloud attack techniques to OSINT and physical security, and the event has carved out its own place broadcasting Japan's hacker culture to the world. The 2026 edition runs for a half day on November 21.
  13. 11/22 (Sun) programming Tokyo

    JSConf JP 2026

    The Japanese edition of the worldwide JSConf family, organized by the Japan Node.js Association and among the largest JavaScript conferences in the country. Succeeding the Tokyo NodeFest since 2019, it is known for bringing in international speakers, from language spec designers to runtime developers, across four dense parallel tracks, serving as the junction between Japan's community and global JavaScript trends. The 2026 edition moves to Bellesalle Kanda.
  14. 11/24 (Tue) – 27 network Tokyo

    Internet Week 2026

    A comprehensive event on Internet infrastructure technology hosted by JPNIC. Running since 1997, it gathers the engineers who keep routing, DNS, and security infrastructure working, across disciplines. Programs range from tutorials to trend seminars; the 2025 edition drew a cumulative 3,900+ participants. The 2026 edition is planned for November 24-27 in Ryogoku, Tokyo.
  15. 11/26 (Thu) – 27 tech Tokyo

    Architecture Conference 2026

    A large-scale conference dedicated to software architecture, hosted by Findy. Under the theme "architecture decisions, technology, and organizations that sustain business continuity and evolution," it shares case studies from three angles of strategy, implementation, and organization. In 2026, Martin Fowler, author of Refactoring, is scheduled to speak in Japan. The 2025 edition drew 5,549 registrations over two days.
  16. 11/26 (Thu) – 27 startup Tokyo

    WE AT CHALLENGE 2026

    A global pitch contest and summit in the well-being domain hosted by WE AT, in partnership with the University of Tokyo, Hakuhodo, and others. Winners receive non-equity funding from a prize pool exceeding 30 million yen. The previous edition drew about 600 entries from 40 countries. This is a pitch contest plus summit rather than a general-admission conference. Entries are accepted in Japanese or English (English required by the final round).
  17. 11/27 (Fri) open-source Tokyo

    PostgreSQL Conference Japan 2026

    Japan's largest comprehensive PostgreSQL conference, held annually by the Japan PostgreSQL Users Group (JPUG). Developers and DBAs gather for a full day of two morning talks and fourteen sessions across three afternoon tracks, spanning new core features, cloud, extensions, and operations. The 2025 edition drew 226 attendees, the most in eight years, with committers and vendor engineers from Japan and abroad on stage.
  18. 11/27 (Fri) – 29 programming Tokyo

    YAPC::Tokyo 2026

    A conference for IT engineers centered on Perl, hosted by the Japan Perl Association. Marking the 10th anniversary of the touring YAPC::Japan series launched in 2016, the 2026 edition takes place at Tokyo Big Sight under the theme "Patchwork." Talks go well beyond Perl, and the event is known for dense community exchange from the pre-party to the after-party. The 2024 Hiroshima edition drew a series-record 448 attendees.
December 2026 5
  1. 12/2 (Wed) – 8 game Tokyo

    GTMF 2026 (Game Tools & Middleware Forum)

    An exhibition-and-seminar event specializing in tools and middleware for game development, run by IID across two venues, Osaka (Dec 2) and Tokyo (Dec 8). Vendors of engines, sound, QA, and AI solutions gather so that engineers and creators can compare the latest development environments for free. Its 2026 edition is the 21st, making it one of Japan's leading developer-focused events.
  2. 12/3 (Thu) – 4 tech Shimane

    RubyWorld Conference 2026

    A business-oriented Ruby conference held in Matsue, the birthplace of Ruby. Anchored by a keynote from Yukihiro Matsumoto (Matz), it showcases business use cases of Ruby and the latest developments in the ecosystem. A major Ruby event alongside RubyKaigi.
  3. 12/7 (Mon) – 9 open-source Tokyo

    Open Source Summit Japan 2026

    Japan's premier open source conference, organized by the Linux Foundation. Tracks span the Linux kernel, cloud native, and open source AI, offering direct access to maintainers and community leaders from around the world. Linus Torvalds delivered a 2025 keynote; the 2026 edition is co-located with ELC Asia and the Automotive Linux Summit.
  4. 12/15 (Tue) – 17 deeptech Aichi

    TechGALA Japan 2026: BEYOND

    The third edition of TechGALA, a technology and startup festival held across the city of Nagoya. The schedule moves from the traditional January-February window to December, making 2026 an exceptional year with two editions (January and December). Days 1-2 take place in the Sakae district (Chunichi Building, NADYA PARK, and more) and Day 3 in the Tsurumai district (STATION Ai and more). The theme is BEYOND, going beyond existing frameworks.
  5. 12/16 (Wed) – 17 startup Tokyo

    Startup JAPAN EXPO 2026 Winter

    The second edition within the same year of the startup exhibition organized by Eight, Sansan's business-card app. Following the April Makuhari edition, it moves to Ariake GYM-EX. Startups meet large corporations, investors, municipalities, and media through Dream Pitch, conferences, and themed networking sessions. Its shift to a twice-a-year cadence reflects growing demand for domestic startup exhibitions.
April 2027 4
  1. 4/6 (Tue) – 7 web3 Tokyo

    TEAMZ WEB3/AI SUMMIT 2027

    The 10th anniversary edition of one of Japan's largest Web3 and AI conferences. Entrepreneurs, investors, and developers from over 80 countries gather in Tokyo to discuss the frontiers of blockchain, AI, and crypto assets. Held at the historic Japanese garden of Happo-en, it is known for its internationally diverse networking, complemented by a VIP dinner and a closing red carpet gala.
  2. 4/7 (Wed) – 9 tech Tokyo

    Japan IT Week Spring 2027

    The spring edition of Japan's largest IT and DX trade show. In 2027 it runs alongside Japan DX & AX Week, Sales & Digital Marketing Week, and EC & Store Week, with about 1,100 exhibitors filling East Halls 1-8 of Tokyo Big Sight and an expected 57,000 visitors. It serves as a venue for comparing IT products and holding business talks, covering everything from systems development and security to AI.
  3. 4/14 (Wed) – 16 programming Miyazaki

    RubyKaigi 2027

    One of the world's largest international conferences dedicated to the Ruby language. Ruby creator Yukihiro Matsumoto (Matz), the core team, and developers from around the globe gather for deep technical talks on language internals, implementations, and performance. Following its tradition of touring Japan, the 2027 edition heads to Miyazaki.
  4. 4/27 (Tue) – 28 ai Tokyo

    AI Expo Spring 2027

    The spring edition of one of Japan's largest AI-focused exhibitions, organized by AIsmiley, operator of an AI portal media. It gathers the latest AI products and services, from generative AI and image recognition to physical AI robots. Spring 2026 drew 12,154 visitors and added a physical AI and robot zone. The 2027 edition runs April 27-28 at Tokyo International Forum, serving corporate teams evaluating AI adoption.