| Keijiro Matsumoto | |
| Position: | Outfielder |
| Bats: | Left |
| Throws: | Left |
| Birth Date: | 24 June 1986 |
| Birth Place: | Ōamishirasato, Chiba, Japan |
| Debutdate: | April 3 |
| Debutyear: | 2009 |
| Debutteam: | Yokohama BayStars |
| Teams: | |
is a professional Japanese baseball player. He plays outfielder for the Yokohama DeNA BayStars.