| ITF - W50 Porto | 01/30 16:10 | 25 | [246] Gergana Topalova v Julie Struplova [290] | 2-6,3-6 | |
| ITF - W50 Bangalor | 01/17 08:15 | 25 | [247] Gergana Topalova v Polina Kudermetova [186] | 2-6,3-6 | |
| ITF - W50 Nonthaburi | 01/10 03:00 | 25 | [247] Gergana Topalova v Maja Chwalinska [361] | 3-6,5-7 | |
| 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 Lisboa | 10/08 09:25 | 29 | [252] Gergana Topalova v Katarina Zavatska [194] | 3-6,6-2,5-7 | |
| ITF - W40 Lisboa | 10/07 09:00 | 28 | [226] Carlota Martinez Cirez v Gergana Topalova [252] | 6-4,5-7,4-6 | |
| ITF - W40 Lisboa | 10/06 11:25 | 27 | [252] Gergana Topalova v Guiomar M Z D Reales [423] | 6-2,6-1 | |
| ITF - W40 Lisboa | 10/05 15:35 | 26 | Gergana Topalova v Claudia Hoste Ferrer | 6-1,6-2 | |
| ITF - W40 Lisboa | 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 |
Gergana Topalova (Bulgarian: Гергана Топалова; born 22 February 2000) is a Bulgarian tennis player. She has career-high WTA rankings of No. 210 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.