| ITF - W75 Zagreb | 05/17 10:45 | 28 | Tara Wurth v Gergana Topalova | 6-3,6-1 | |
| ITF - W75 Zagreb | 05/16 08:00 | 27 | [167] Martina Capurro Taborda v Gergana Topalova [252] | 6-7,2-6 | |
| ITF - W75 Zagreb | 05/15 09:50 | 26 | [252] Gergana Topalova v Jana Fett [128] | 6-4,7-6 | |
| ITF - W75 Zagreb | 05/14 14:20 | 25 | [252] Gergana Topalova v Ekaterine Gorgodze [347] | 6-2,6-1 | |
| ITF - W35 Bastad | 05/12 08:55 | 29 | [356] Berfu Cengiz v Gergana Topalova [252] | 6-4,6-2 | |
| ITF - W35 Bastad | 05/11 10:00 | 28 | [457] Irina Fetecau v Gergana Topalova [252] | 4-6,3-6 | |
| ITF - W35 Bastad | 05/10 10:25 | 27 | [326] Madison Sieg v Gergana Topalova [252] | 5-7,4-6 | |
| ITF - W35 Bastad | 05/09 12:20 | 26 | Sina Herrmann v Gergana Topalova | 3-6,7-6,1-6 | |
| ITF - W35 Bastad | 05/08 12:15 | 25 | Tessa Johanna Brockmann v Gergana Topalova | 3-6,4-6 | |
| ITF - W100 Wiesbaden | 04/28 09:30 | 54 | [319] Barbora Palicova v Gergana Topalova [248] | 6-1,3-6,6-4 | |
| ITF - W75 Koper | 04/17 16:40 | 25 | [242] Gergana Topalova v Justina Mikulskyte [227] | Retired | |
| Billie Jean King Cup | 04/13 11:20 | 2 | [253] Gergana Topalova v Francisca Jorge [190] | 4-6,4-6 | |
| Billie Jean King Cup | 04/12 09:45 | 1 | Gergana Topalova v Emily Sartz-Lunde | 3-6,6-3,6-2 | |
| Billie Jean King Cup | 04/08 10:00 | 1 | [435] Adrienn Nagy v Gergana Topalova [253] | 7-5,7-6 | |
| ITF - W35 Hammamet | 04/06 09:00 | 28 | [442] Sara Cakarevic v Gergana Topalova [253] | 2-6,6-1,6-4 | |
| ITF - W35 Hammamet | 04/05 09:00 | 27 | [434] Ekaterina Reyngold v Gergana Topalova [253] | 2-6,4-6 | |
| ITF - W35 Hammamet | 04/04 10:45 | 26 | Ariadna G P Canals v Gergana Topalova | 0-6,2-6 | |
| ITF - W35 Hammamet | 04/02 12:00 | 25 | Briana Szabo v Gergana Topalova | Retired | |
| ITF - W35 Alaminos-Larnaca | 03/21 11:05 | 26 | [245] Gergana Topalova v Cristina Dinu [227] | 1-6,3-6 | |
| ITF - W35 Alaminos-Larnaca | 03/19 14:25 | 25 | Gergana Topalova v Emma Fulvia Wiesenfeld | 6-4,6-4 | |
| ITF - W35 Alaminos-Larnaca | 03/12 09:45 | 25 | [242] Gergana Topalova v Irene B Escorihuela [264] | 3-6,0-6 | |
| ITF - W35 Antalya | 02/21 09:45 | 25 | [352] Ayla Aksu v Gergana Topalova [240] | 6-4,6-1 | |
| ITF - W35 Antalya | 02/15 12:45 | 25 | [321] Anastasiya K Soboleva v Gergana Topalova [245] | 6-3,6-1 | |
| ITF - W35 Antalya | 02/10 09:40 | 27 | [246] Gergana Topalova v Polona Hercog [235] | Retired | |
| ITF - W35 Antalya | 02/08 08:40 | 26 | Gergana Topalova v Paula Ormaechea | 6-3,6-1 | |
| ITF - W35 Antalya | 02/07 07:00 | 25 | [246] Gergana Topalova v Dimitra Pavlou [414] | 7-6,6-7,7-6 | |
| ITF - W50 Porto | 01/30 16:10 | 25 | [246] Gergana Topalova v Julie Struplova [290] | 2-6,3-6 | |
| ITF - W50 Bengaluru | 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 |
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.