| 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 | |
| ITF W15 Antalya | 03/10 11:20 | 25 | Gergana Topalova v Matilde Paoletti | 3-6,6-1,6-2 | |
| ITF W15 Antalya | 02/20 06:50 | 28 | Gergana Topalova v Andreea Prisacariu | 2-6,2-6 | |
| ITF W15 Antalya | 02/19 07:00 | 27 | [494] Ingrid Gamarra Martins v Gergana Topalova [459] | 6-3,5-7,1-6 | |
| ITF W15 Antalya | 02/18 10:30 | 26 | Sapfo Sakellaridi v Gergana Topalova | 2-6,0-6 | |
| ITF W15 Antalya | 02/17 07:00 | 25 | Polina Kudermetova v Gergana Topalova | Retired | |
| ITF W15 Antalya | 02/11 08:45 | 26 | Gergana Topalova v Polina Kudermetova | 6-4,6-7,4-6 | |
| ITF W15 Antalya | 02/09 09:00 | 25 | [459] Gergana Topalova v Yuliana Lizarazo [393] | 7-5,6-1 | |
| ITF W15 Antalya | 02/03 07:00 | 25 | Gergana Topalova v Jessie Aney | 6-4,1-6,4-6 | |
| ITF W15 Antalya | 01/31 10:05 | 26 | Matilde Paoletti v Gergana Topalova | 7-5,6-3 | |
| ITF W15 Antalya | 01/30 06:30 | 25 | Gergana Topalova v Sofia Shapatava | Retired | |
| ITF W15 Antalya | 12/17 07:00 | 26 | [459] Gergana Topalova v Valeriya Strakhova [385] | 6-2,4-6,5-7 | |
| ITF W15 Antalya | 12/16 12:05 | 25 | Gergana Topalova v Katarina Kozarov | 3-6,6-3,6-4 | |
| ITF W15 Antalya | 12/10 06:55 | 26 | Erika Andreeva v Gergana Topalova | 6-2,6-2 | |
| ITF W15 Antalya | 12/09 12:15 | 25 | Maria Sara Popa v Gergana Topalova | 6-2,2-6,4-6 | |
| ITF W15 Antalya | 12/02 07:00 | 25 | Sapfo Sakellaridi v Gergana Topalova | 7-6,3-6,6-3 | |
| ITF W15 Heraklion | 11/13 09:00 | 26 | Gergana Topalova v Romy Koelzer | 4-6,4-6 | |
| ITF W15 Heraklion | 11/12 11:00 | 25 | Gergana Topalova v Karola Patricia Bejenaru | 6-2,6-2 |
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.