Siobhán Nicholson
| Country (sports) | Ireland |
|---|---|
| Born | 11 June 1966 Wimbledon, England |
| Height | 1.70 m (5 ft 7 in) |
| Plays | Right-handed |
| Prize money | $21,494 |
| Singles | |
| Career record | 44–38 |
| Career titles | 3 ITF |
| Highest ranking | No. 259 (16 November 1992) |
| Grand Slam singles results | |
| Wimbledon | Q1 (1983, 1992) |
| Doubles | |
| Career record | 50–42 |
| Career titles | 4 ITF |
| Highest ranking | No. 309 (15 July 1991) |
| Grand Slam doubles results | |
| Wimbledon | Q1 (1992, 1993) |
Siobhán Nicholson (born 11 June 1966) is an Irish former professional tennis player.