Sofia Costoulas
| Country (sports) | Belgium |
|---|---|
| Born | 2 April 2005 Genk, Belgium |
| Plays | Right-handed (two-handed backhand) |
| Prize money | $203,970 |
| Singles | |
| Career record | 163–107 |
| Career titles | 4 ITF |
| Highest ranking | No. 163 (6 October 2025) |
| Current ranking | No. 173 (8 September 2025) |
| Grand Slam singles results | |
| Australian Open | Q1 (2026) |
| French Open | Q2 (2025) |
| Wimbledon | Q1 (2025) |
| US Open | Q1 (2025) |
| Doubles | |
| Career record | 68–48 |
| Career titles | 3 ITF |
| Highest ranking | No. 229 (25 September 2023) |
| Current ranking | No. 467 (28 July 2025) |
| Last updated on: 8 September 2025. | |
Sofia Costoulas (Greek: Κωστούλα, romanized: Kostoula; born 2 April 2005) is a Belgian professional tennis player. She has career-high rankings of No. 173 in singles, achieved on 8 September 2025, and No. 229 in doubles, achieved on 25 September 2023.