| Tournament information | |
|---|---|
| Location | Varies – Kanagawa in 2025 |
| Established | 1991 |
| Course | Varies – Sagamihara Golf Club (East Course) in 2025 |
| Par | 72 |
| Length | 6,997 yards (6,398 m) |
| Organized by | Japan Golf Association |
| Tour | PGA of Japan Senior Tour |
| Format | Stroke play |
| Prize fund | ¥80,000,000 |
| Month played | September |
| Current champion | |
 Thammanoon Sriroj | |
The Japan Senior Open Golf Championship is one of the major championships in Japanese men's senior golf. It is administered by the Japan Golf Association (JGA) and is recognised as a major championship by the PGA of Japan Senior Tour. It was founded in 1991.
Winners
- 2025
Thammanoon Sriroj - 2024 Choi Ho-sung
- 2023 Hiroyuki Fujita
- 2022 Prayad Marksaeng (4)
- 2021 Taichi Teshima
- 2020 Akira Teranishi
- 2019 Toru Taniguchi
- 2018 Prayad Marksaeng (3)
- 2017 Prayad Marksaeng (2)
- 2016 Prayad Marksaeng
- 2015 Takenori Hiraishi
- 2014 Masahiro Kuramoto (2)
- 2013 Kiyoshi Murota (2)
- 2012 Frankie Miñoza
- 2011 Kiyoshi Murota
- 2010 Masahiro Kuramoto
- 2009 Tsukasa Watanabe
- 2008 Tsuneyuki Nakajima (3)
- 2007 Isao Aoki (5)
- 2006 Tsuneyuki Nakajima (2)
- 2005 Tsuneyuki Nakajima
- 2004 Katsunari Takahashi (3)
- 2003 Katsunari Takahashi (2)
- 2002 Takaaki Fukuzawa
- 2001 Fujio Kobayashi
- 2000 Katsunari Takahashi
- 1999 Graham Marsh (2)
- 1998 Graham Marsh
- 1997 Isao Aoki (4)
- 1996 Isao Aoki (3)
- 1995 Isao Aoki (2)
- 1994 Isao Aoki
- 1993 Seiichi Kanai (3)
- 1992 Seiichi Kanai (2)
- 1991 Seiichi Kanai
External links
Japan PGA home page (in Japanese)