| Koichi Hashimoto 橋本 幸一 | |
| Fullname: | Koichi Hashimoto |
| Birth Date: | 13 January 1969 |
| Birth Place: | Japan |
| Position: | Midfielder |
| Years1: | 1984–1989 |
| Clubs1: | XV Novembro-Jaú |
| Years2: | 1990–1992 |
| Clubs2: | Central |
| Years3: | 1993–1994 |
| Clubs3: | Corinthians Paulista |
| Years4: | 1995 |
| Clubs4: | Kashiwa Reysol |
| Caps4: | 0 |
| Goals4: | 0 |
| Years5: | 1997 |
| Clubs5: | Fukushima FC |
| Years6: | 1999 |
| Clubs6: | Juazeiro |
| Years7: | 2001 |
| Clubs7: | Paraná |
| Years8: | 2001–2002 |
| Clubs8: | Santa Cruz |
| Years9: | 2002–2003 |
| Clubs9: | Luziânia |
is a former Japanese football player.
Hashimoto was born on January 13, 1969. In 1984, when he was 15 years old, he moved to Brazil and joined XV Novembro-Jaú. In the early 1990s, he played for Central and Corinthians Paulista. In July 1995, he returned to Japan and he joined the newly promoted J1 League club Kashiwa Reysol and played in one season. In 1997, he joined the Japan Football League club Fukushima FC. However, the club was disbanded at the end of the 1997 season due to financial strain. From 1999, he played for the Brazilian clubs Juazeiro, Paraná, Santa Cruz, and Luziânia. He retired at the end of the 2003 season.