| ITF W25維戈 | 08/25 11:00 | 26 | 尤曉迪 v Sofia Costoulas | 6-0,6-4 | |
| ITF W25維戈 | 08/24 08:55 | 25 | 露西亞 L 多明戈 v Sofia Costoulas | 2-6,0-6 | |
| ITF W25福克斯希爾斯 | 08/02 09:00 | 25 | Sofia Costoulas v 荀芳穎 | 6-2,3-6,4-6 | |
| ITF W25古爾岡 | 06/30 04:00 | 26 | Sofia Costoulas v 安基塔•雷娜 | Retired | |
| ITF W25古爾岡 | 06/29 09:30 | 25 | Sofia Costoulas v 阿坎莎 D 尼圖爾 | 6-1,6-2 | |
| ITF W25古爾岡 | 06/26 04:30 | 29 | Sofia Costoulas v 格爾曼•考爾•桑恩迪 | 4-6,6-2,1-6 | |
| ITF W25古爾岡 | 06/25 04:30 | 28 | Sofia Costoulas v Saki Imamura | 6-2,6-4 | |
| ITF W25古爾岡 | 06/24 04:30 | 27 | 戴安娜•馬辛科維卡 v Sofia Costoulas | 4-6,4-6 | |
| ITF W25古爾岡 | 06/23 06:30 | 26 | Sofia Costoulas v 葉卡特琳娜•雅詩娜 | 6-7,6-1,7-5 | |
| ITF W25古爾岡 | 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勒阿弗爾 | 03/20 19:05 | 54 | 瑪麗•班諾特 v Sofia Costoulas | 6-2,6-1 | |
| ITF W25薩利納斯 | 03/11 15:00 | 27 | 芭芭拉•加蒂卡 v Sofia Costoulas | 7-6,6-4 | |
| ITF W25薩利納斯 | 03/10 16:40 | 26 | Sofia Costoulas v Hanna Chang | 7-6,0-6,6-2 | |
| ITF W25薩利納斯 | 03/09 15:50 | 25 | 安娜•索菲亞•桑切斯 v Sofia Costoulas | 1-6,1-6 | |
| ITF W25薩利納斯 | 03/08 13:50 | 24 | Sofia Costoulas v 麗貝卡•佩雷拉 | 6-2,6-1 | |
| ITF W25瓜亞基爾 | 03/05 15:00 | 28 | 特薩 Andrianjafitrimo v Sofia Costoulas | 6-4,6-3 | |
| ITF W25瓜亞基爾 | 03/04 15:00 | 27 | Sofia Costoulas v 蘇珊•拉門斯 | 7-5,6-3 | |
| ITF W25瓜亞基爾 | 03/03 15:30 | 26 | 達妮埃拉•塞蓋爾 v Sofia Costoulas | 3-6,4-6 | |
| ITF W25瓜亞基爾 | 03/02 20:35 | 25 | Sofia Costoulas v 瑪麗亞 F H 岡薩雷斯 | 6-3,6-2 | |
| ITF W25瓜亞基爾 | 03/01 17:55 | 24 | Sofia Costoulas v 凱登思•布雷斯 | 6-3,6-2 | |
| ITF W15莫納斯提爾 | 02/18 08:30 | 27 | 馬拉•古斯 v Sofia Costoulas | 6-4,4-6,6-1 | |
| ITF W15莫納斯提爾 | 02/17 11:10 | 26 | 路易斯∙布魯斯科格 v Sofia Costoulas | 1-6,1-6 | |
| ITF W15莫納斯提爾 | 02/16 13:00 | 25 | Sofia Costoulas v 伊內斯•伊博 | 6-3,6-1 | |
| ITF W15莫納斯提爾 | 01/02 08:30 | 29 | Sofia Costoulas v Akvile 帕拉茲斯凱特 | 5-7,2-6 | |
| ITF W15莫納斯提爾 | 01/01 10:30 | 28 | 科謝妮亞•拉斯庫圖娃 v Sofia Costoulas | 5-7,3-6 | |
| ITF W15莫納斯提爾 | 12/31 11:15 | 27 | 阿蓮達•魯希提 v Sofia Costoulas | 2-6,2-6 | |
| ITF W15莫納斯提爾 | 12/30 10:45 | 26 | 戴安娜•徹霍迪 v Sofia Costoulas | 0-6,4-6 | |
| ITF W15莫納斯提爾 | 12/29 08:30 | 25 | Sofia Costoulas v 瀬間詠裏花 | 4-6,7-6,6-0 | |
| ITF W15莫納斯提爾 | 12/26 08:30 | 29 | Sofia Costoulas v 張玮桓 | 6-3,4-6,6-7 |
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.