The Japan X Bowl (previously the Japan Super Bowl) was the annual championship game of the X-League, the highest level of professional American football in Japan.
| Year | Bowl | Stadium | Winner | Score | Runner-up | Most Valuable Player (MVP) Award | Most Improved Player (MIP) | Attendance |
|---|---|---|---|---|---|---|---|---|
| 1987 | Tokyo Super Bowl I | Yokohama Stadium | Renown Rovers | 31-28 | Silver Star | |||
| 1988 | Tokyo Super Bowl II | Tokyo Dome | Renown Rovers | 28-20 | Matsushita Electric Works Impulse | |||
| 1989 | Tokyo Super Bowl III | Tokyo Dome | Asahi Beer Silver Star | 14-9 | NEC Falcons | |||
| 1990 | Tokyo Super Bowl IV | Tokyo Dome | Matsushita Electric Works Impulse | 14-6 | Onward Oaks | |||
| 1991 | Tokyo Super Bowl V | Tokyo Dome | Onward Oaks | 49-10 | Sunstar Finies | |||
| 1992 | Tokyo Super Bowl VI | Tokyo Dome | Asahi Beer Silver Star | 21-7 | Matsushita Electric Works Impulse | |||
| 1993 | Tokyo Super Bowl VII | Tokyo Dome | Asahi Beer Silver Star | 13-0 | Sunstar Finies | |||
| 1994 | Tokyo Super Bowl VIII | Tokyo Dome | Matsushita Electric Works Impulse | 48-28 | Onward Oaks | |||
| 1995 | Tokyo Super Bowl IX | Tokyo Dome | Matsushita Electric Works Impulse | 54-20 | Recruit Seagulls | |||
| 1996 | Tokyo Super Bowl X | Tokyo Dome | Recruit Seagulls | 30-10 | Onward Oaks | |||
| 1997 | Tokyo Super Bowl XI | Tokyo Dome | Kajima Deers | 48-12 | Matsushita Electric Works Impulse | RB Yasushi Horiguchi (Kajima) | 38,500 | |
| 1998 | Tokyo Super Bowl XII | Tokyo Dome | Recruit Seagulls | 45-24 | Asahi Beer Silver Star | WR Takashi Horie (Recruit) | 32,000 | |
| 1999 | Tokyo Super Bowl XIII | Tokyo Dome | Asahi Beer Silver Star | 18-16 | Kajima Deers | QB Kanaoka (Asahi Beer) | 24,000 | |
| 2000 | Tokyo Super Bowl XIV | Tokyo Dome | Asahi Soft Drink Challengers | 20-18 | Matsushita Electric Works Impulse | Tamon Nakamura (Asahi Soft Drink) | 25,000 | |
| 2001 | Tokyo Super Bowl XV | Tokyo Dome | Asahi Soft Drink Challengers | 14-7 | Matsushita Electric Works Impulse | LB Shinzo Yamada (Asahi Soft Drink) | 25,000 | |
| 2002 | Tokyo Super Bowl XVI | Tokyo Dome | Seagulls | 14-7 | Fujitsu Frontiers | QB Daisuke Takahashi (Seagulls) | 21,500 | |
| 2003 | Japan X Bowl XVII | Tokyo Dome | Onward Skylarks | 13-10 | Asahi Beer Silver Star | RB Yasuhiro Kabata (Onward) | 22,500 | |
| 2004 | Japan X Bowl XVIII | Kobe Wing Stadium | Matsushita Electric Works Impulse | 15-6 | Asahi Beer Silver Star | K/P Masahiro Ota (Matsushita) | 15,500 | |
| 2005 | Japan X Bowl XIX | Tokyo Dome | Obic Seagulls | 25-16 | Matsushita Electric Works Impulse | DE Kevin Jackson (Obic) | 13,564 | |
| 2006 | Japan X Bowl XX | Kyocera Dome Osaka | Onward Skylarks | 24-21 | Kajima Deers | Takashi Kojima (Onward) | 12,327 | |
| 2007 | Japan X Bowl XXI | Tokyo Dome | Matsushita Electric Works Impulse | 33-13 | Fujitsu Frontiers | QB Tetsuo Takata (Matsushita) | 17,629 | |
| 2008 | Japan X Bowl XXII | Kyocera Dome Osaka | Panasonic Electric Works Impulse | 28-14 | Kajima Deers | Jindai Ishino (Panasonic) | 13,834 | |
| 2009 | Japan X Bowl XXIII | Tokyo Dome | Kajima Deers | 21-14 | Fujitsu Frontiers | WR Naoki Maeda (Kajima) | 22,059 | |
| 2010 | Japan X Bowl XXIV | Tokyo Dome | Obic Seagulls | 20-16 | Panasonic Electric Works Impulse | QB Shun Sugawara (Obic) | S Atsushi Tsuji (Panasonic) | 18,353 |
| 2011 | Japan X Bowl XXV | Tokyo Dome | Obic Seagulls | 24-17 | Fujitsu Frontiers | WR Noriaki Kinoshita (Obic) | QB Hiroshi Izuhara (Fujitsu) | 19,864 |
| 2012 | Japan X Bowl XXVI | Tokyo Dome | Obic Seagulls | 27-24 | Kajima Deers | RB Takuto Hara (Obic) | S Hiroki Kato (Kajima) | 23,126 |
| 2013 | Japan X Bowl XXVII | Tokyo Dome | Obic Seagulls | 24-16 | Fujitsu Frontiers | DE Kevin Jackson (Obic) | CB Al-Riwan Adeyami (Fujitsu) | 22,488 |
| 2014 | Japan X Bowl XXVIII | Tokyo Dome | Fujitsu Frontiers | 44-10 | IBM Big Blue | RB Gino Gordon (Fujitsu) | TE John Stanton (IBM) | 25,085 |
| 2015 | Japan X Bowl XXIX | Tokyo Dome | Panasonic Impulse | 24-21 | Fujitsu Frontiers | QB Tetsuo Takata (Panasonic) | WR Junpei Yoshimoto (Fujitsu) | 25,408 |
| 2016 | Japan X Bowl XXX | Tokyo Dome | Fujitsu Frontiers | 16-3 | Obic Seagulls | QB Colby Cameron (Fujitsu) | DL Hiroaki Nakazato (Obic) | 25,455 |
| 2017 | Japan X Bowl XXXI | Tokyo Dome | Fujitsu Frontiers | 63-23 | IBM Big Blue | WR Teruaki Clark Nakamura (Fujitsu) | - | 22,953 |
| 2018 | Japan X Bowl XXXII | Tokyo Dome | Fujitsu Frontiers | 35-18 | IBM Big Blue | RB Trashaun Nixon (Fujitsu) | - | 25,457 |
| 2019 | Japan X Bowl XXXIII | Tokyo Dome | Fujitsu Frontiers | 28-26 | Panasonic Impulse | RB Samajie Grant (Fujitsu) | - | 20,000 |
| 2020 | Japan X Bowl XXXIV | Tokyo Dome | Obic Seagulls | 13-7 | Fujitsu Frontiers | RB Taku Lee (Obic) | - | |
| Appearances | Team | Wins | Losses | Winning percentage |
|---|---|---|---|---|
| 15 | Panasonic Impulse | 7 | 8 | .467 |
| 12 | Fujitsu Frontiers | 5 | 7 | .416 |
| 11 | Obic Seagulls | 9 | 2 | .818 |
| 8 | Asahi Beer Silver Star | 4 | 4 | .500 |
| 6 | Onward Skylarks | 3 | 3 | .500 |
| 6 | Lixil Deers | 2 | 4 | .333 |
| 3 | IBM Big Blue | 0 | 4 | .000 |
| 2 | Asahi Soft Drink Challengers | 3 | 0 | 1.000 |
| 2 | Renown Rovers | 2 | 0 | 1.000 |
| 2 | Elecom Kobe Finies | 0 | 2 | .000 |
| 1 | NEC Falcons | 0 | 1 | .000 |