| ITF W35克拉根福 | 05/28 07:30 | 25 | [404] 艾琳娜•马雷金娜 v Sofia Costoulas [341] | 3-6,6-3,4-6 | |
| ITF W35安嫩海姆 | 05/24 10:35 | 28 | [281] Sofia Costoulas v 特蕾莎·瓦伦托娃 [334] | 5-7,1-6 | |
| ITF W35安嫩海姆 | 05/23 16:00 | 27 | [281] Sofia Costoulas v 尼卡•拉迪希奇 [378] | 6-2,6-3 | |
| ITF W35安嫩海姆 | 05/22 15:30 | 26 | [281] Sofia Costoulas v 马拉•古斯 [501] | 2-6,6-1,6-3 | |
| ITF W35安嫩海姆 | 05/22 07:00 | 25 | Sofia Costoulas v 米拉•马希奇 | 6-2,6-2 | |
| ITF W35巴斯塔德 | 05/09 08:10 | 26 | [457] 伊莉娜 Fetecau v Sofia Costoulas [291] | 弃权 | |
| ITF W35巴斯塔德 | 05/07 11:25 | 25 | 迈勒恩•奴迪 v Sofia Costoulas | 2-6,6-7 | |
| 比利•简•金杯 | 04/13 19:05 | 64 | 艾玛•纳瓦罗 v Sofia Costoulas | 已取消 | |
| 比利•简•金杯 | 04/12 22:00 | 64 | [5] 杰西卡•皮古拉 v Sofia Costoulas [279] | 4-6,6-2,6-3 | |
| ITF W50柏市 | 04/05 03:15 | 27 | [356] 李亚轩 v Sofia Costoulas [285] | 6-1,6-2 | |
| ITF W50柏市 | 04/04 03:30 | 26 | [285] Sofia Costoulas v 普瑞希拉•贺恩 [189] | 6-2,6-2 | |
| ITF W50柏市 | 04/02 03:40 | 25 | [285] Sofia Costoulas v 朴昭炫 [299] | 6-2,6-2 | |
| ITF W50甲府 | 03/28 03:10 | 26 | [286] Sofia Costoulas v 德斯汀妮 Aiava [196] | 3-6,4-6 | |
| ITF W50甲府 | 03/27 04:00 | 25 | Sofia Costoulas v Rin Nakagawara | 6-1,6-2 | |
| ITF W15日出 | 03/23 01:00 | 28 | Sofia Costoulas v 麦根•玛纳斯 | 2-6,3-6 | |
| ITF W15日出 | 03/22 00:55 | 27 | Sofia Costoulas v 大宾•基姆 | 3-6,6-3,6-0 | |
| ITF W15日出 | 03/21 04:20 | 26 | Sofia Costoulas v Kisa Yoshioka | 6-0,6-3 | |
| ITF W15日出 | 03/20 05:00 | 25 | Sofia Costoulas v Yui Chikaraishi | 6-0,6-2 | |
| ITF W35圣多明哥 | 03/13 13:25 | 25 | [279] Sofia Costoulas v 玛丽亚 F H 冈萨雷斯 [205] | 6-0,3-6,3-6 | |
| ITF W35圣多明哥 | 03/08 15:15 | 27 | [226] 埃尔维纳•卡利娃 v Sofia Costoulas [279] | 6-7,6-4,6-0 | |
| ITF W35圣多明哥 | 03/07 16:15 | 26 | [278] Varvara 莱普琴科 v Sofia Costoulas [279] | 6-7,4-6 | |
| ITF W35圣多明哥 | 03/06 15:05 | 25 | [471] 玛丽亚•萨拉•波帕 v Sofia Costoulas [279] | 2-6,5-7 | |
| ITF W50比勒陀利亚 | 02/27 10:05 | 25 | [296] 贾达•丹尼尔 v Sofia Costoulas [274] | 7-5,6-2 | |
| ITF W50比勒陀利亚 | 02/20 13:00 | 25 | [377] 凯拉•麦克菲 v Sofia Costoulas [274] | 6-3,6-2 | |
| ITF W50罗汉普顿 | 02/15 13:35 | 26 | [278] Nikola Bartunkova v Sofia Costoulas [276] | 6-3,6-1 | |
| ITF W50罗汉普顿 | 02/14 09:55 | 25 | [493] 约翰内斯 C 斯文森 v Sofia Costoulas [276] | 4-6,3-6 | |
| ITF W75罗马（乔治亚） | 01/31 18:20 | 25 | [258] Sofia Costoulas v 瓦列莉亚∙斯特拉科娃 [242] | 3-6,7-5,4-6 | |
| ITF W75维罗海滩 | 01/23 20:05 | 25 | [248] Sofia Costoulas v 萨奇亚•维克里 [137] | 6-2,3-6,2-6 | |
| ITF W35那不勒斯 | 01/18 14:50 | 26 | [248] Sofia Costoulas v 薇薇安•沃尔弗 [399] | 6-4,3-6,1-6 | |
| ITF W35那不勒斯 | 01/17 17:10 | 25 | [248] Sofia Costoulas v 维多利亚·奥苏圭 [441] | 3-6,6-2,6-2 |
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.