| Keitaro Konnai | |
| Fullname: | 近内 圭太郎 |
| Strokes: | Backstroke |
| Club: | Kamakura Swimming School |
| Birth Date: | 5 August 1978 |
| Birth Place: | Kanagawa |
| Weight: | 72kg (159lb) |
is a retired male backstroke swimmer from Japan. He represented his native country at the 1996 Summer Olympics in Atlanta, Georgia.[1]