| Challenger Prague | 04/17 10:10 | 14 | [344] Ergi Kirkin v Sanjar Fayziev [251] | 4-6,3-6 | |
| Challenger Oeiras | 04/05 09:30 | 25 | [349] Ergi Kirkin v Jozef Kovalik [181] | 2-6,3-6 | |
| Challenger Oeiras | 04/04 09:30 | 19 | Ergi Kirkin v Johannes Haerteis | 6-3,6-2 | |
| Challenger Oeiras Qual | 04/03 11:45 | 14 | Ergi Kirkin v Luis Faria | 7-6,6-4 | |
| Challenger Oeiras | 03/29 16:20 | 25 | [357] Ergi Kirkin v Nino Serdarusic [207] | 1-6,3-6 | |
| Challenger Oeiras | 03/28 11:20 | 19 | [357] Ergi Kirkin v Guy Den Ouden [481] | 6-4,6-4 | |
| Challenger Oeiras | 03/27 13:20 | 14 | [357] Ergi Kirkin v Ryan Nijboer [403] | 6-0,7-5 | |
| Challenger Zadar | 03/21 12:05 | 19 | [408] Cezar Cretu v Ergi Kirkin [362] | 7-5,6-3 | |
| Challenger Zadar | 03/20 13:05 | 14 | Admir Kalender v Ergi Kirkin | 3-6,1-6 | |
| ITF M25 Rovinj | 03/19 09:30 | 28 | [291] Dalibor Svrcina v Ergi Kirkin [362] | 6-2,1-6,6-2 | |
| ITF M25 Rovinj | 03/18 11:05 | 27 | [362] Ergi Kirkin v Arthur Cazaux [285] | 6-2,6-3 | |
| ITF M25 Rovinj | 03/17 09:00 | 26 | Ergi Kirkin v Timo Stodder | 6-0,3-6,6-2 | |
| ITF M25 Rovinj | 03/15 12:35 | 25 | [362] Ergi Kirkin v Giovanni Fonio [414] | 6-4,7-6 | |
| ITF M25 Porec | 03/09 12:25 | 25 | [440] Matthieu Perchicot v Ergi Kirkin [362] | 6-3,3-6,6-1 | |
| ITF M25 Antalya | 02/25 10:00 | 26 | [373] Ergi Kirkin v Martin Cuevas [488] | 4-6,7-6,3-6 | |
| ITF M25 Antalya | 02/24 15:00 | 25 | Ergi Kirkin v Lamine Ouahab | 6-0,6-3 | |
| ITF M25 Antalya | 02/18 09:20 | 27 | [368] Ergi Kirkin v Riccardo Bonadio [293] | 5-7,3-6 | |
| ITF M25 Antalya | 02/17 09:10 | 26 | Ergi Kirkin v Andrey Chepelev | 6-3,6-0 | |
| ITF M25 Antalya | 02/16 07:00 | 25 | Ergi Kirkin v Manuel Mazza | 6-4,6-2 | |
| ITF M15 Antalya | 01/29 14:45 | 27 | Ergi Kirkin v Davide Galoppini | 1-6,6-4,2-6 | |
| ITF M15 Antalya | 01/29 10:20 | 26 | Ergi Kirkin v Jorge Martinez Martinez | 6-3,6-1 | |
| ITF M15 Antalya | 01/28 13:15 | 25 | Ergi Kirkin v Paul Woerner | 4-6,6-4,10-2 | |
| ITF M25 Vilnius | 01/18 09:30 | 25 | Ergi Kirkin v Daniel Cukierman | 2-6,6-4,2-6 | |
| Challenger Antalya | 11/30 09:35 | 25 | [253] Nuno Borges v Ergi Kirkin [311] | 6-4,6-3 | |
| Challenger Manama | 11/22 15:00 | 25 | [308] Ergi Kirkin v Cem Ilkel [145] | 4-6,2-6 | |
| Challenger Bratislava | 11/07 14:35 | 14 | Ergi Kirkin v Milos Karol | 1-6,6-7 | |
| Challenger Tenerife | 11/01 16:00 | 25 | [88] Tallon Griekspoor v Ergi Kirkin [301] | 6-2,6-2 | |
| Challenger Losinj | 10/19 08:00 | 25 | [319] Raul Brancaccio v Ergi Kirkin [303] | 6-3,3-6,6-2 | |
| Challenger Napoli | 10/06 08:00 | 25 | [91] Stefano Travaglia v Ergi Kirkin [306] | 7-6,6-3 | |
| Challenger Sibiu | 09/30 11:00 | 26 | [194] Thanasi Kokkinakis v Ergi Kirkin [312] | 6-1,6-1 |
Ergi Kırkın (born 27 January 1999) is a Turkish tennis player.
Kırkın has a career high ATP singles ranking of World No. 270 achieved on 25 July 2022. He has won 9 ITF singles titles. He also has a career high ATP doubles ranking of World No. 325 achieved on 11 September 2023.
Kırkın made his ATP main draw debut at the 2018 Antalya Open in the doubles draw partnering Koray Kırcı.