| ITF - W25 Santo Domingo | 06/17 13:55 | 27 | Gergana Topalova v Pei-Chi Lee | 0-6,4-6 | |
| ITF - W25 Santo Domingo | 06/16 13:30 | 26 | [494] Hiroko Kuwata v Gergana Topalova [398] | 3-6,1-6 | |
| ITF - W25 Santo Domingo | 06/15 17:00 | 25 | Sharmada Balu v Gergana Topalova | 2-6,1-6 | |
| ITF - W25 Santo Domingo | 06/09 16:15 | 26 | [496] Hiroko Kuwata v Gergana Topalova [400] | 7-5,6-2 | |
| ITF - W25 Santo Domingo | 06/08 16:35 | 25 | Olivia Lincer v Gergana Topalova | 6-4,3-6,6-7 | |
| ITF - W25 Warmbad-Villach | 05/19 07:55 | 26 | [329] Lea Boskovic v Gergana Topalova [407] | 6-1,6-3 | |
| ITF - W25 Warmbad-Villach | 05/18 07:55 | 25 | [407] Gergana Topalova v Aurora Zantedeschi [352] | 6-0,6-2 | |
| ITF W15 - Caïro | 05/07 10:30 | - | Melanie Klaffner v Gergana Topalova | View | |
| ITF W15 - Caïro | 05/07 10:30 | 28 | Melanie Klaffner v Gergana Topalova | Walkover | |
| ITF W15 - Caïro | 05/06 11:40 | 27 | Denislava Glushkova v Gergana Topalova | Retired | |
| ITF W15 - Caïro | 05/05 08:00 | 26 | Gebriela Mihaylova v Gergana Topalova | 1-6,2-6 | |
| ITF W15 - Caïro | 05/04 08:00 | 25 | Leena Metwally v Gergana Topalova | 2-6,1-6 | |
| ITF W25 Cairo | 04/27 15:20 | 25 | [414] Gergana Topalova v Selena Janicijevic [373] | 2-6,6-7 | |
| ITF - W15 Antalya | 04/20 09:15 | 25 | [277] Anna Kubareva v Gergana Topalova [414] | 6-4,6-2 | |
| ITF - W15 Antalya | 04/19 07:00 | 62 | Gergana Topalova v Mia Kupres | 7-5,2-6,10-5 | |
| ITF - W15 Antalya | 04/18 07:00 | 62 | Gergana Topalova v Anastasia Mozgaleva | 6-1,6-0 | |
| ITF - W15 Antalya | 04/17 07:00 | 62 | Gergana Topalova v Helena Buchwald | 6-3,6-3 | |
| ITF - W15 Antalya | 04/13 10:50 | 25 | Vicky Van De Peer v Gergana Topalova | 7-6,7-5 | |
| ITF - W15 Antalya | 04/05 08:20 | 25 | Julia Avdeeva v Gergana Topalova | 6-2,6-3 | |
| ITF W25 - Antalya | 03/13 07:00 | 62 | Gergana Topalova v Rina Saigo | 6-7,6-2,3-10 | |
| ITF W25 - Antalya | 03/06 08:30 | 62 | Sapfo Sakellaridi v Gergana Topalova | 7-5,6-2 | |
| ITF - W15 Antalya | 03/04 06:20 | 26 | [429] Gergana Topalova v Rosa Vicens Mas [484] | 3-6,4-6 | |
| ITF - W15 Antalya | 03/01 10:05 | 25 | Gergana Topalova v Melis Sezer | 6-1,6-0 | |
| ITF - W15 Monastir | 11/16 09:00 | 25 | Gergana Topalova v Anja Wildgruber | 2-6,6-7 | |
| ITF W25 - Kirjat Motzkin | 10/25 10:20 | 25 | [449] Gergana Topalova v Nika Radisic [192] | 4-6,2-6 | |
| ITF W25 - Netanya | 10/21 07:00 | 26 | [317] Carole Monnet v Gergana Topalova [447] | 7-5,6-3 | |
| ITF W25 - Netanya | 10/19 08:10 | 25 | Kami Osher v Gergana Topalova | 0-6,2-6 | |
| ITF W15 - Sozopol | 10/13 14:10 | 25 | Yeonwoo Ku v Gergana Topalova | Retired | |
| ITF W15 - Sozopol | 10/07 08:00 | 26 | Denislava Glushkova v Gergana Topalova | 6-1,7-5 | |
| ITF W15 - Sozopol | 10/06 10:10 | 25 | Eleni Christofi v Gergana Topalova | 6-2,2-6,5-7 |
Gergana Topalova (Bulgarian: Гергана Топалова; born 22 February 2000) is a Bulgarian tennis player. She has career-high WTA rankings of No. 231 in singles and No. 388 in doubles. Topalova has won six singles titles and four doubles titles on the ITF Circuit.
On the ITF Junior Circuit, she has a career-high combined ranking of 31, achieved on 22 January 2018.
In 2019, Topalova made her Fed Cup debut for Bulgaria.
On 23 November 2022, she was confirmed as a participant at the 2023 United Cup as part of the Bulgarian team. On New Year’s Eve 2022, she made her debut in mixed doubles match alongside Adrian Andreev which they lost to the top-seeded team of Maria Sakkari and Stefanos Tsitsipas. The following day, she made her WTA main draw debut and lost her first WTA singles match to Elise Mertens in three sets.
Topalova participated in the qualifying draw of the 2023 Hobart International. She entered as an alternate and lost in the first round of qualifying to Diane Parry.