| contest | season | date | where | advances to | results | problems | website | CMS id |
| japan-2026 upcoming | 2026–2027 | | Yokohama, Japan | apc-2027 | | | | 9676 (admin · finder) |
| japan-2025 | 2025–2026 | 2025-12-07 | Yokohama, Japan | apc-2026 | SI | StDSoP set | icpc.jp/2025/regional live wb src archived | 9386 (admin · finder) |
| japan-2024 | 2024–2025 | 2024-12-22 | Yokohama, Japan | apc-2025 | SI | StDSoP set | icpc.jp/2024/regional live wb src archived | 8738 (admin · finder) |
| japan-2023 | 2023–2024 | 2023-11-26 | Yokohama, Japan | apc-2024 | I | StDSoP set | icpc.jp/2023/regional live wb src archived | 7498 (admin · finder) |
| japan-2022 | 2022–2023 | 2022-12-28 | Yokohama, Japan | wf-2023 | I | StDSoP set | icpc.jp/2022/regional live wb src archived | 5624 (admin · finder) |
| japan-2021 | 2021–2022 | 2022-03-16 | online · Yokohama, Japan | wf-2022 | StI | StDSoP set | icpc.jp/2021/regional live wb src archived | 4882 (admin · finder) |
| japan-2020 | 2020–2021 | 2021-03-17 | Yokohama, Japan | wf-2021 | StI | StDSoP set | icpc.jp/2020/regional live wb src archived | 4331 (admin · finder) |
| japan-2019 | 2019–2020 | 2019-11-18 | Yokohama, Japan | wf-2020 | StI | StDSoP set | icpc.jp/2019/regional live wb src archived | 4165 (admin · finder) |
| japan-2018 | 2018–2019 | 2018-12-09 | Yokohama, Japan | wf-2019 | SStI | StDSoP set | icpc.jp/2018/regional live wb src archived | 3742 (admin · finder) |
| japan-2017 | 2017–2018 | 2017-12-17 | Tsukuba, Japan | wf-2018 | SStI | StDSoP set | icpc.jp/2017 live wb src archived | 3413 (admin · finder) |
| japan-2016 | 2016–2017 | 2016-10-16 | Tsukuba, Japan | wf-2017 | StI | StDSoP set | icpc.jp/2016 live wb src archived | 3042 (admin · finder) |
| japan-2015 | 2015–2016 | 2015-11-30 | Tsukuba, Japan | wf-2016 | StI | StDSoP set | icpc.jp/2015 live wb src archived | 2912 (admin · finder) |
| japan-2014 | 2014–2015 | 2014-10-20 | Asia, Tokyo | wf-2015 | StI | StDSoP set | icpc.jp/2014 live wb src archived | 2590 (admin · finder) |
| japan-2013 | 2013–2014 | 2013-11-25 | Aizu-Wakamatsu, Japan | wf-2014 | StI | StDSoP set | sparth.u-aizu.ac.jp/icpc2013 dead wb src archived | 1929 (admin · finder) |
| japan-2012 | 2012–2013 | 2012-11-19 | Administrative Site Location | wf-2013 | StI | StDSoP set | cs.titech.ac.jp/icpc2012/index-e.html live wb src archived | 1487 (admin · finder) |
| japan-2011 | 2011–2012 | 2011-11-14 | Fukuoka, Japan | wf-2012 | StI | StDSoP set | icpc2011.ait.kyushu-u.ac.jp dead wb src archived | 797 (admin · finder) |
| japan-2010 | 2010–2011 | 2010-12-12 | Tokyo, Japan | wf-2011 | StI | StDSoP set | icpc2010.honiden.nii.ac.jp dead wb src archived | 600 (admin · finder) |
| japan-2009 | 2009–2010 | 2009-11-08 | Tokyo, Japan | wf-2010 | StI | StDSoP set | waseda.jp/assoc-icpc2009/en/index.html dead wb src archived | 498 (admin · finder) |
| japan-2008 | 2008–2009 | 2008-10-26 | Aizu-Wakamatsu, Japan | wf-2009 | StI | StDSoP set | sparth.u-aizu.ac.jp/icpc2008/r_overview… dead wb src archived | 6 (admin · finder) |
| japan-2007 | 2007–2008 | 2007-11-03 | Tokyo, Japan | wf-2008 | StI | StDSoP set | logos.ic.i.u-tokyo.ac.jp/icpc2007 dead wb src | 1069 (admin · finder) |
| japan-2006 | 2006–2007 | 2006-11-05 | Yokohama, Japan | wf-2007 | StI | StDSoP set | acm-japan.org/icpc2006 changed wb src archived | 1126 (admin · finder) |
| japan-2005 | 2005–2006 | 2005-11-04 | Tokyo, Japan | wf-2006 | StI | StDSoP set | teu.ac.jp/icpc changed wb src archived | 1087 (admin · finder) |
| japan-2004 | 2004–2005 | 2004-11-21 | online | wf-2005 | St | StDSoP set | ehime-u.ac.jp/ICPC/regional/results.html changed wb src archived | 1117 (admin · finder) |
| japan-2003 | 2003–2004 | 2003-11-02 | Aizu-Wakamatsu, Japan | wf-2004 | St | StDSoP set | u-aizu.ac.jp/conference/ACM replaced wb src archived | 1198 (admin · finder) |
| japan-2002 | 2002–2003 | 2002-11-04 | , Japan | wf-2003 | StR | StDSoP set | icpc.baylor.edu/past/icpc2003/regionals… dead wb src archived | 1194 (admin · finder) |
| japan-2001 | 2001–2002 | 2001-11-11 | Hakodate, Japan | wf-2002 | StR | 8 StDSoP set | fun.ac.jp/icpc dead wb src archived | 1055 (admin · finder) |
| japan-2000 | 2000–2001 | 2000-11-12 | Tsukuba, Japan | wf-2001 | StR | 8 StDSoP set | icpc.score.is.tsukuba.ac.jp dead wb src | 1044 (admin · finder) |
| japan-1999 | 1999–2000 | 1999-12-04 | Kyoto, Japan | wf-2000 | St | 8 StDSoP set | isse.kuis.kyoto-u.ac.jp/acm-japan dead wb src | 977 (admin · finder) |
| japan-1998 | 1998–1999 | 1998-11-23 | Tokyo, Japan | wf-1999 | SSt | 8 StDSoP set | isse.kuis.kyoto-u.ac.jp/acm-japan dead wb src | 1102 (admin · finder) |