Willoughby Hamilton
| Full name | James Willoughby Hamilton |
|---|---|
| Born | 9 December 1864 Monasterevin, County Kildare, Ireland |
| Died | 27 September 1943 (aged 78) Dublin, County Dublin, Ireland |
| Height | 1.75 m (5 ft 9 in) |
| Turned pro | 1884 (amateur) |
| Retired | 1899 |
| Singles | |
| Career record | 79–13 (85.8%) |
| Career titles | 29 |
| Grand Slam singles results | |
| Wimbledon | W (1890) |
James Willoughby Hamilton; 9 (December 1864 – 27 September 1943) was a co-world No. 1 Irish male tennis player, a footballer and international badminton player.