Rei Sakamoto
| Country (sports) | Japan | 
|---|---|
| Born | 24 June 2006 Nagoya, Japan | 
| Height | 1.95 m (6 ft 5 in) | 
| Plays | Right-handed (two-handed backhand) | 
| Prize money | US $44,162 | 
| Singles | |
| Career record | 0–1 (at ATP Tour level, Grand Slam level, and in Davis Cup) | 
| Career titles | 0 | 
| Highest ranking | No. 279 (31 March 2025) | 
| Current ranking | No. 281 (21 April 2025) | 
| Grand Slam singles results | |
| Australian Open | Q1 (2025) | 
| Doubles | |
| Career record | 0–1 (at ATP Tour level, Grand Slam level, and in Davis Cup) | 
| Career titles | 0 | 
| Highest ranking | No. 848 (2 December 2024) | 
| Current ranking | No. 848 (2 December 2024) | 
| Last updated on: 12 January 2024. | |
Rei Sakamoto (坂本怜, Sakamoto Rei; born 24 June 2006) is a Japanese tennis player. He has a career high ATP singles ranking of world No. 330 achieved on 17 March 2025. He also has a career high ATP doubles ranking of No. 848 achieved on that same date.