| ITF W35巴斯塔德 | 05/09 08:10 | 26 | [457] 伊莉娜 Fetecau v Sofia Costoulas [291] | Retired | |
| ITF W35巴斯塔德 | 05/07 11:25 | 25 | 邁勒恩•奴迪 v Sofia Costoulas | 2-6,6-7 | |
| 比利•簡•金盃 | 04/13 19:05 | 64 | 艾瑪•納瓦羅 v Sofia Costoulas | Cancelled | |
| 比利•簡•金盃 | 04/12 22:00 | 64 | [5] 傑西卡•皮古拉 v Sofia Costoulas [279] | 4-6,6-2,6-3 | |
| ITF W50柏市 | 04/05 03:15 | 27 | [356] 李亞 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•賀恩 [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 麥根•瑪納斯 | 2-6,3-6 | |
| ITF W15日出 | 03/22 00:55 | 27 | Sofia Costoulas v 大賓•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聖多明哥 | 03/13 13:25 | 25 | [279] Sofia Costoulas v 瑪麗亞 F H 岡薩雷斯 [205] | 6-0,3-6,3-6 | |
| ITF W35聖多明哥 | 03/08 15:15 | 27 | [226] 埃爾維納•卡利娃 v Sofia Costoulas [279] | 6-7,6-4,6-0 | |
| ITF W35聖多明哥 | 03/07 16:15 | 26 | [278] Varvara 萊普琴科 v Sofia Costoulas [279] | 6-7,4-6 | |
| ITF W35聖多明哥 | 03/06 15:05 | 25 | [471] 瑪麗亞•薩拉•波帕 v Sofia Costoulas [279] | 2-6,5-7 | |
| ITF W50比勒陀利亞 | 02/27 10:05 | 25 | [296] 賈達•丹尼爾 v Sofia Costoulas [274] | 7-5,6-2 | |
| ITF W50比勒陀利亞 | 02/20 13:00 | 25 | [377] 凱拉•麥克菲 v Sofia Costoulas [274] | 6-3,6-2 | |
| ITF W50羅漢普頓 | 02/15 13:35 | 26 | [278] Nikola Bartunkova v Sofia Costoulas [276] | 6-3,6-1 | |
| ITF W50羅漢普頓 | 02/14 09:55 | 25 | [493] 約翰內斯 C 斯文森 v Sofia Costoulas [276] | 4-6,3-6 | |
| ITF W75羅馬（喬治亞） | 01/31 18:20 | 25 | [258] Sofia Costoulas v 瓦列莉亞∙斯特拉科娃 [242] | 3-6,7-5,4-6 | |
| ITF W75維羅海灘 | 01/23 20:05 | 25 | [248] Sofia Costoulas v 薩奇亞•維克裏 [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•沃爾弗 [399] | 6-4,3-6,1-6 | |
| ITF W35那不勒斯 | 01/17 17:10 | 25 | [248] Sofia Costoulas v 維多利亞·奧蘇圭 [441] | 3-6,6-2,6-2 | |
| ITF W25利馬索爾 | 12/03 09:00 | 29 | [255] Silvia Ambrosio v Sofia Costoulas [296] | 1-6,3-6 | |
| ITF W25利馬索爾 | 12/02 08:00 | 28 | [296] Sofia Costoulas v 阿納斯塔西婭•扎哈羅娃 [192] | 7-6,7-5 | |
| ITF W25利馬索爾 | 12/01 08:00 | 27 | [296] Sofia Costoulas v Polina Iatcenko [358] | 7-5,7-5 | |
| ITF W25利馬索爾 | 11/30 08:00 | 26 | [296] Sofia Costoulas v 漢恩•范德溫克爾 [343] | 7-5,6-1 | |
| ITF W25利馬索爾 | 11/29 08:00 | 25 | Sofia Costoulas v 安吉麗娜•維爾格斯 | 3-6,7-6,6-0 |
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.