| ITF W25古尔冈 | 06/29 09:30 | 25 | Sofia Costoulas v 阿坎莎 D 尼图尔 | 6-1,6-2 | |
| ITF W25古尔冈 | 06/26 04:30 | 29 | Sofia Costoulas v 格尔曼•考尔•桑恩迪 | 4-6,6-2,1-6 | |
| ITF W25古尔冈 | 06/25 04:30 | 28 | Sofia Costoulas v Saki Imamura | 6-2,6-4 | |
| ITF W25古尔冈 | 06/24 04:30 | 27 | 戴安娜•马辛科维卡 v Sofia Costoulas | 4-6,4-6 | |
| ITF W25古尔冈 | 06/23 06:30 | 26 | Sofia Costoulas v 叶卡特琳娜•雅诗娜 | 6-7,6-1,7-5 | |
| ITF W25古尔冈 | 06/22 05:50 | 25 | Ikumi Yamazaki v Sofia Costoulas | 5-7,3-6 | |
| ITF W25德南 | 06/15 12:05 | 25 | Lucie Nguyen Tan v Sofia Costoulas | 6-4,6-7,7-6 | |
| ITF W25勒阿弗尔 | 03/20 19:05 | 54 | 玛丽•班诺特 v Sofia Costoulas | 6-2,6-1 | |
| ITF W25萨利纳斯 | 03/11 15:00 | 27 | 芭芭拉•加蒂卡 v Sofia Costoulas | 7-6,6-4 | |
| ITF W25萨利纳斯 | 03/10 16:40 | 26 | Sofia Costoulas v Hanna Chang | 7-6,0-6,6-2 | |
| ITF W25萨利纳斯 | 03/09 15:50 | 25 | 安娜•索菲亚•桑切斯 v Sofia Costoulas | 1-6,1-6 | |
| ITF W25萨利纳斯 | 03/08 13:50 | 24 | Sofia Costoulas v 丽贝卡•佩雷拉 | 6-2,6-1 | |
| ITF W25瓜亚基尔 | 03/05 15:00 | 28 | 特萨 Andrianjafitrimo v Sofia Costoulas | 6-4,6-3 | |
| ITF W25瓜亚基尔 | 03/04 15:00 | 27 | Sofia Costoulas v 苏珊•拉门斯 | 7-5,6-3 | |
| ITF W25瓜亚基尔 | 03/03 15:30 | 26 | 达妮埃拉•塞盖尔 v Sofia Costoulas | 3-6,4-6 | |
| ITF W25瓜亚基尔 | 03/02 20:35 | 25 | Sofia Costoulas v 玛丽亚 F H 冈萨雷斯 | 6-3,6-2 | |
| ITF W25瓜亚基尔 | 03/01 17:55 | 24 | Sofia Costoulas v 凯登思•布雷斯 | 6-3,6-2 | |
| ITF W15莫纳斯提尔 | 02/18 08:30 | 27 | 马拉•古斯 v Sofia Costoulas | 6-4,4-6,6-1 | |
| ITF W15莫纳斯提尔 | 02/17 11:10 | 26 | 路易斯∙布鲁斯科格 v Sofia Costoulas | 1-6,1-6 | |
| ITF W15莫纳斯提尔 | 02/16 13:00 | 25 | Sofia Costoulas v 伊内斯•伊博 | 6-3,6-1 | |
| ITF W15莫纳斯提尔 | 01/02 08:30 | 29 | Sofia Costoulas v Akvile 帕拉兹斯凯特 | 5-7,2-6 | |
| ITF W15莫纳斯提尔 | 01/01 10:30 | 28 | 科谢妮亚•拉斯库图娃 v Sofia Costoulas | 5-7,3-6 | |
| ITF W15莫纳斯提尔 | 12/31 11:15 | 27 | 阿莲达•鲁希提 v Sofia Costoulas | 2-6,2-6 | |
| ITF W15莫纳斯提尔 | 12/30 10:45 | 26 | 戴安娜•彻霍迪 v Sofia Costoulas | 0-6,4-6 | |
| ITF W15莫纳斯提尔 | 12/29 08:30 | 25 | Sofia Costoulas v 瀬間詠里花 | 4-6,7-6,6-0 | |
| ITF W15莫纳斯提尔 | 12/26 08:30 | 29 | Sofia Costoulas v 张玮桓 | 6-3,4-6,6-7 | |
| ITF W15莫纳斯提尔 | 12/25 08:30 | 28 | Sofia Costoulas v 科谢妮亚•拉斯库图娃 | 7-6,7-5 | |
| ITF W15莫纳斯提尔 | 12/24 12:15 | 27 | Sofia Costoulas v 阿莲达•鲁希提 | 7-5,2-6,6-2 | |
| ITF W15莫纳斯提尔 | 12/23 14:08 | 26 | 卡罗尔•莫内 v Sofia Costoulas | 3-6,7-5,6-7 | |
| ITF W15莫纳斯提尔 | 12/21 09:40 | 25 | Sofia Costoulas v 阿古斯蒂纳 Chlpac | 6-2,6-2 |
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.