| 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 | |
| ITF - W25 Budapeste | 09/27 14:30 | 54 | [312] Lisa Pigato v Gergana Topalova [442] | 4-6,7-6,11-9 | |
| ITF - W25 Budapeste | 09/26 13:00 | 54 | Aneta Laboutkova v Gergana Topalova | 3-6,1-6 | |
| ITF - W25 Jablonec nad Nisou | 09/13 10:00 | 62 | Gergana Topalova v Mana Kawamura | 1-6,4-6 | |
| ITF - W25 Jablonec nad Nisou | 09/12 11:30 | 62 | Gergana Topalova v Nicole Gadient | 6-3,6-4 | |
| ITF - W25 Frýdek-Místek | 09/06 10:00 | 62 | Gergana Topalova v Martina Marusinova | 6-2,2-6,8-10 | |
| ITF - W60 Praga | 08/31 08:00 | 62 | [360] Tereza Smitkova v Gergana Topalova [487] | 6-3,6-2 | |
| ITF - W60 Praga | 08/30 11:30 | 62 | Laetitia Pulchartova v Gergana Topalova | 3-6,1-6 | |
| ITF - W60 Praga | 08/29 13:00 | 62 | Isabelle Haverlag v Gergana Topalova | 3-6,5-7 | |
| ITF - W60 Přerov | 08/24 08:00 | 62 | Andrea Gamiz v Gergana Topalova | 6-2,6-2 | |
| ITF - W60 Přerov | 08/23 10:10 | 62 | Adela Moravcova v Gergana Topalova | 6-4,2-6,4-10 | |
| ITF - W60 Přerov | 08/22 11:00 | 62 | Martina Pradova v Gergana Topalova | 2-6,6-7 | |
| ITF - W25 Pescara | 08/03 09:55 | 25 | [477] Gergana Topalova v Maria Lourdes Carle [317] | 6-1,2-6,3-6 | |
| ITF - W25 Telavi | 07/19 10:25 | 25 | Eva Lys v Gergana Topalova | 1-6,7-5,6-3 | |
| ITF - W25 Telavi | 07/14 13:30 | 25 | [339] Lina Gjorcheska v Gergana Topalova [493] | 6-2,6-3 | |
| ITF - W25 Telavi | 07/12 09:25 | 24 | Gergana Topalova v Eva Lys | 6-2,6-3 | |
| ITF - W60 Charleston | 06/23 15:55 | 25 | [482] Gergana Topalova v Emma Navarro [385] | 4-6,2-6 | |
| ITF - W60 Charleston | 06/22 21:30 | 54 | [482] Gergana Topalova v Yuliana Lizarazo [417] | 7-5,6-4 | |
| ITF - W60 Charleston | 06/21 19:35 | 54 | Gergana Topalova v Adriana Reami | 6-1,7-6 | |
| ITF - W25 Sumter | 06/17 14:00 | 26 | [469] Gergana Topalova v Marcela Zacarias [300] | 5-7,4-6 | |
| ITF - W25 Sumter | 06/16 17:20 | 25 | Ahmani Guichard v Gergana Topalova | 3-6,6-2,6-7 | |
| ITF - W25 Sumter | 06/15 15:05 | 54 | Gergana Topalova v Mayuka Aikawa | 6-2,4-6,10-7 | |
| ITF - W25 Sumter | 06/14 14:30 | 54 | Gergana Topalova v Carmen Corley | 7-5,4-6,10-3 | |
| ITF - W25 Otočec | 05/26 11:10 | 25 | [468] Gergana Topalova v Anna Bondar [242] | 5-7,1-6 | |
| ITF - W25 Otočec | 05/25 09:40 | 44 | [407] Sara Cakarevic v Gergana Topalova [468] | 6-4,3-6,8-10 | |
| ITF - W25 Otočec | 05/24 14:50 | 44 | Pia Brglez v Gergana Topalova | 0-6,5-7 | |
| ITF - W15 Šibenik | 05/20 13:15 | 26 | Gergana Topalova v Federica Rossi | 3-6,2-6 |
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.