| ITF W40 Lisbon | 10/04 12:30 | 25 | [193] Irina Maria Bara v Gergana Topalova [252] | 4-6,1-6 | |
| ITF W40 Kursumlijska 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 Wroclaw | 08/20 10:00 | 29 | [313] Gergana Topalova v Darya Astakhova [249] | 1-6,5-7 | |
| ITF W40 Wroclaw | 08/19 08:30 | 28 | [271] Sada Nahimana v Gergana Topalova [313] | 5-7,4-6 | |
| ITF W40 Wroclaw | 08/18 10:00 | 27 | Gergana Topalova v Oleksandra Oliynykova | 1-6,6-4,6-4 | |
| ITF W40 Wroclaw | 08/17 08:00 | 26 | [313] Gergana Topalova v Ekaterine Gorgodze [404] | 6-3,0-6,7-5 | |
| ITF W40 Wroclaw | 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 Parnu | 07/19 12:45 | 25 | [484] Ilay Yoruk v Gergana Topalova [285] | Retired | |
| ITF W25 Punta Cana | 07/15 14:00 | 28 | [295] Gergana Topalova v Carlota M Cirez [235] | 2-6,3-6 | |
| ITF W25 Punta Cana | 07/14 14:00 | 27 | [329] Martina Capurro Taborda v Gergana Topalova [295] | 6-1,0-6,6-7 | |
| ITF W25 Punta Cana | 07/13 15:15 | 26 | Noelia Bouzo Zanotti v Gergana Topalova | 5-7,2-6 | |
| ITF W25 Punta Cana | 07/12 17:15 | 25 | Lucia De Santa Ana v Gergana Topalova | 6-4,1-6,2-6 | |
| ITF W25 Punta Cana | 07/06 13:30 | 26 | Gergana Topalova v Alexa Noel | Retired | |
| ITF W25 Punta Cana | 07/05 16:00 | 25 | Gergana Topalova v Julia Konishi Camargo Silva | 6-1,6-3 | |
| ITF W25 Santo Domingo | 07/02 16:00 | 29 | [329] Martina Capurro Taborda v Gergana Topalova [295] | 3-6,6-0,6-0 | |
| ITF W25 Santo Domingo | 07/01 15:15 | 28 | [316] Solana Sierra v Gergana Topalova [294] | 7-5,4-6,2-6 | |
| ITF W25 Santo Domingo | 06/30 18:25 | 27 | [420] Cadence Brace v Gergana Topalova [294] | 5-7,6-3,3-6 | |
| ITF W25 Santo Domingo | 06/29 16:15 | 26 | Leonie Kung v Gergana Topalova | 1-6,4-6 |
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.