| ITF W35 Bastad | 05/09 08:15 | 26 | 페테카우, 이리나 vs Costoulas, Sofia | View |
| ITF W35 Bastad | 05/07 11:25 | 25 | 누디, 마이린 v Costoulas, Sofia | 2-6,6-7 | |
| Billie Jean King Cup 2022, Finals | 04/13 19:05 | 64 | 나바로, 에마 v Costoulas, Sofia | CANC | |
| Billie Jean King Cup 2022, Finals | 04/12 22:00 | 64 | [5] 페굴라, 제시카 v Costoulas, Sofia [279] | 4-6,6-2,6-3 | |
| ITF W50 Kashiwa | 04/05 03:15 | 27 | [356] 이, 야수안 v Costoulas, Sofia [285] | 6-1,6-2 | |
| ITF W50 Kashiwa | 04/04 03:30 | 26 | [285] Costoulas, Sofia v 혼, 프리스실라 [189] | 6-2,6-2 | |
| ITF W50 Kashiwa | 04/02 03:40 | 25 | [285] Costoulas, Sofia v 박, 소현 [299] | 6-2,6-2 | |
| ITF W50 Kofu | 03/28 03:10 | 26 | [286] Costoulas, Sofia v 아이아바, 데스타니 [196] | 3-6,4-6 | |
| ITF W50 Kofu | 03/27 04:00 | 25 | Costoulas, Sofia v Rin Nakagawara | 6-1,6-2 | |
| ITF W15 Hinode | 03/23 01:00 | 28 | Costoulas, Sofia v 마나스, 마에간 | 2-6,3-6 | |
| ITF W15 Hinode | 03/22 00:55 | 27 | Costoulas, Sofia v 김, 다빈 | 3-6,6-3,6-0 | |
| ITF W15 Hinode | 03/21 04:20 | 26 | Costoulas, Sofia v Yoshioka, Kisa | 6-0,6-3 | |
| ITF W15 Hinode | 03/20 05:00 | 25 | Costoulas, Sofia v 치카라이시, 유이 | 6-0,6-2 |
Sofia Costoulas (born 2 April 2005) is a Belgian tennis player.
Costoulas has a Greek–Congolese father and a Belgian mother.
Costoulas has a career-high singles ranking by the Women's Tennis Association (WTA) of 248 and a best doubles ranking of 229.
On the ITF Junior Circuit, she had a career-high combined ranking of No. 2, achieved on 18 April 2022. She lost the girls' singles final of the 2022 Australian Open to Petra Marčinko. She had already reached the Wimbledon junior doubles final in 2021.