| ITF W100 Dubai | 12/04 11:35 | 25 | Gergana Topalova v Ekaterina Vl. Makarova | 0-6,6-7 | |
| ITF W60 Trnava | 11/29 16:55 | 25 | [239] Gergana Topalova v Elena Milovanovic [496] | 5-7,1-6 | |
| ITF W25 Lousada | 11/22 10:00 | 25 | [477] Naima Karamoko v Gergana Topalova [239] | Retired | |
| ITF W40 Funchal | 11/15 13:55 | 25 | Gergana Topalova v Emilie Lindh | 6-1,2-6,3-6 | |
| ITF W60 Nantes | 10/30 14:15 | 25 | [147] Polina Kudermetova v Gergana Topalova [240] | 6-2,2-6,7-5 | |
| ITF W60 Glasgow | 10/25 12:30 | 25 | [309] Amarni Banks v Gergana Topalova [240] | 6-3,6-1 | |
| ITF W40 Lissabon | 10/08 09:25 | 29 | [252] Gergana Topalova v Katarina Zavatska [194] | 3-6,6-2,5-7 | |
| ITF W40 Lissabon | 10/07 09:00 | 28 | [226] Carlota Martinez Cirez v Gergana Topalova [252] | 6-4,5-7,4-6 | |
| ITF W40 Lissabon | 10/06 11:25 | 27 | [252] Gergana Topalova v Guiomar M Z D Reales [423] | 6-2,6-1 | |
| ITF W40 Lissabon | 10/05 15:35 | 26 | Gergana Topalova v Claudia Hoste Ferrer | 6-1,6-2 | |
| ITF W40 Lissabon | 10/04 12:30 | 25 | [193] Irina Maria Bara v Gergana Topalova [252] | 4-6,1-6 | |
| ITF W40 Kuršumlijska Banja | 09/27 10:05 | 25 | [332] Mia Ristic v Gergana Topalova [250] | 6-3,6-3 | |
| ITF W40 Pazardzhik | 09/21 09:35 | 26 | [251] Gergana Topalova v Polona Hercog [378] | 4-6,2-6 | |
| ITF W40 Pazardzhik | 09/20 08:30 | 25 | [251] Gergana Topalova v Denislava Glushkova [459] | 6-2,6-1 | |
| ITF W40 Saint-Palais-sur-Mer | 09/10 12:50 | 29 | [331] Justina Mikulskyte v Gergana Topalova [293] | 5-7,7-5,1-6 | |
| ITF W40 Saint-Palais-sur-Mer | 09/09 14:25 | 28 | [293] Gergana Topalova v Ksenia Zaytseva [458] | 2-6,6-4,6-3 | |
| ITF W40 Saint-Palais-sur-Mer | 09/08 11:30 | 27 | [293] Gergana Topalova v Kaylah McPhee [472] | 6-1,6-3 | |
| ITF W40 Saint-Palais-sur-Mer | 09/07 12:25 | 26 | Gergana Topalova v Amandine Monnot | 6-4,6-3 | |
| ITF W40 Saint-Palais-sur-Mer | 09/05 10:50 | 25 | [293] Gergana Topalova v Ekaterine Gorgodze [396] | 6-2,3-6,6-3 | |
| ITF W40 Oldenzaal | 08/31 08:00 | 25 | [129] Brenda Fruhvirtova v Gergana Topalova [293] | 6-1,6-1 | |
| ITF W40 Wrocław | 08/20 10:00 | 29 | [313] Gergana Topalova v Darya Astakhova [249] | 1-6,5-7 | |
| ITF W40 Wrocław | 08/19 08:30 | 28 | [271] Sada Nahimana v Gergana Topalova [313] | 5-7,4-6 | |
| ITF W40 Wrocław | 08/18 10:00 | 27 | Gergana Topalova v Oleksandra Oliynykova | 1-6,6-4,6-4 | |
| ITF W40 Wrocław | 08/17 08:00 | 26 | [313] Gergana Topalova v Ekaterine Gorgodze [404] | 6-3,0-6,7-5 | |
| ITF W40 Wrocław | 08/15 09:35 | 25 | Gergana Topalova v Linda Klimovicova | 6-3,6-4 | |
| ITF W25 Koksijde | 08/11 08:00 | 27 | [465] Dejana Radanovic v Gergana Topalova [271] | 6-4,6-2 | |
| ITF W25 Koksijde | 08/09 10:45 | 26 | [442] Michaela Bayerlova v Gergana Topalova [271] | 3-6,6-7 | |
| ITF W25 Koksijde | 08/08 10:00 | 25 | Chloe Noel v Gergana Topalova | 7-6,5-7,3-6 | |
| ITF W60 Hechingen | 08/02 09:55 | 25 | Gergana Topalova v Ziva Falkner | 2-6,1-6 | |
| ITF W25 Pärnu | 07/19 12:45 | 25 | [484] Ilay Yoruk v Gergana Topalova [285] | Retired |
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.