Seita Watanabe
| Country (sports) | Japan |
|---|---|
| Born | 25 December 2000 Fukushima, Japan |
| Height | 1.80 m (5 ft 11 in) |
| Plays | Right-handed (two-handed backhand) |
| Prize money | $29,083 |
| Singles | |
| Career record | 0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 0 |
| Highest ranking | No. 824 (18 November 2024) |
| Current ranking | No. 884 (6 January 2025) |
| Doubles | |
| Career record | 0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 9 ITF |
| Highest ranking | No. 173 (6 January 2025) |
| Current ranking | No. 173 (6 January 2025) |
| Grand Slam doubles results | |
| Australian Open | 1R (2025) |
| Last updated on: 16 January 2025. | |
Seita Watanabe (渡邉 聖太, Watanabe Seita; born 25 December 2000) is a Japanese tennis player who specializes in doubles. He has a career high ATP doubles ranking of world No. 173 achieved on 6 January 2025.