| ITF W60 Prerov | 08/23 10:10 | 62 | Adela Moravcova v Gergana Topalova | 6-4,2-6,4-10 | |
| ITF W60 Prerov | 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 Otocec | 05/26 11:10 | 25 | [468] Gergana Topalova v Anna Bondar [242] | 5-7,1-6 | |
| ITF W25 Otocec | 05/25 09:40 | 44 | [407] Sara Cakarevic v Gergana Topalova [468] | 6-4,3-6,8-10 | |
| ITF W25 Otocec | 05/24 14:50 | 44 | Pia Brglez v Gergana Topalova | 0-6,5-7 | |
| ITF W15 Sibenik | 05/20 13:15 | 26 | Gergana Topalova v Federica Rossi | 3-6,2-6 | |
| ITF W15 Sibenik | 05/19 17:25 | 25 | Gergana Topalova v Barbora Miklova | 6-4,6-3 | |
| ITF W15 Cairo | 05/09 09:00 | 29 | Gergana Topalova v Elina Avanesyan | 6-3,6-3 | |
| ITF W15 Cairo | 05/08 09:00 | 28 | Barbora Palicova v Gergana Topalova | 3-6,2-6 | |
| ITF W15 Cairo | 05/07 07:55 | 27 | Gergana Topalova v Zhibek Kulambayeva | 6-2,4-6,7-5 | |
| ITF W15 Cairo | 05/06 08:00 | 26 | Gergana Topalova v Isabella Kruger | 6-1,7-5 | |
| ITF W15 Cairo | 05/05 07:55 | 25 | [466] Gergana Topalova v Adrienn Nagy [470] | Retired | |
| ITF W15 Cairo | 04/28 14:40 | 25 | Carlota M Cirez v Gergana Topalova | 6-3,6-4 | |
| ITF W15 Antalya | 04/15 11:40 | 26 | Gergana Topalova v Nuria Brancaccio | 2-6,0-6 | |
| ITF W15 Antalya | 04/13 12:50 | 25 | Gergana Topalova v Petia Arshinkova | 6-4,3-6,6-0 | |
| ITF W25 Dubai | 03/29 06:00 | 54 | [461] Gergana Topalova v Ipek Oz [494] | 2-6,7-5,4-10 | |
| ITF W15 Antalya | 03/17 09:25 | 25 | [462] Gergana Topalova v Miriam Kolodziejova [446] | 4-6,4-6 | |
| ITF W15 Antalya | 03/12 07:00 | 27 | [458] Sohyun Park v Gergana Topalova [460] | 6-3,3-6,6-3 | |
| ITF W15 Antalya | 03/11 08:25 | 26 | [460] Gergana Topalova v Nagi Hanatani [374] | 6-4,6-3 |
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.