| ITF M25 Doha | 01/20 13:00 | 29 | [367] Khumoyun Sultanov v Ergi Kirkin [340] | 6-3,1-6,5-7 | |
| ITF M25 Doha | 01/19 13:00 | 28 | Ergi Kirkin v Ali Habib | 6-4,6-4 | |
| ITF M25 Doha | 01/18 12:00 | 27 | Masamichi Imamura v Ergi Kirkin | 6-7,6-7 | |
| ITF M25 Doha | 01/17 12:00 | 26 | Yi Zhou v Ergi Kirkin | 2-6,0-6 | |
| ITF M25 Doha | 01/16 11:55 | 25 | Ammar Faleh Alhogbani v Ergi Kirkin | 4-6,2-6 | |
| Challenger Nonthaburi | 01/07 06:25 | 14 | [338] Ergi Kirkin v Yusuke Takahashi [446] | 3-6,4-6 | |
| Challenger Nonthaburi | 12/31 07:55 | 14 | Marat Sharipov v Ergi Kirkin | 4-6,7-6,6-3 | |
| ITF M25 Monastir | 11/17 10:05 | 27 | [356] Hady Habib v Ergi Kirkin [346] | 6-2,6-3 | |
| ITF M25 Monastir | 11/16 11:00 | 26 | [479] Martyn Pawelski v Ergi Kirkin [346] | 5-7,7-6,1-6 | |
| ITF M25 Monastir | 11/15 08:30 | 25 | Gabriele Piraino v Ergi Kirkin | 0-6,5-7 | |
| ATP Sofia | 11/04 16:45 | 14 | [332] Ergi Kirkin v Francesco Passaro [214] | 7-5,3-6,1-6 | |
| Challenger Bergamo | 10/29 17:25 | 14 | [481] Jelle Sels v Ergi Kirkin [333] | 6-2,6-2 | |
| Challenger Hamburg | 10/16 15:25 | 25 | [327] Ergi Kirkin v Adam Walton [177] | 2-6,4-6 | |
| Challenger Malaga | 10/08 09:45 | 14 | [329] Ergi Kirkin v Ugo Blanchet [324] | Retired | |
| ATP Shanghai | 10/02 04:00 | 14 | [198] Seongchan Hong v Ergi Kirkin [328] | 7-5,6-3 | |
| Challenger Bad Waltersdorf | 09/20 14:10 | 26 | [201] Jozef Kovalik v Ergi Kirkin [343] | 6-1,6-2 | |
| Challenger Bad Waltersdorf | 09/19 08:00 | 25 | [343] Ergi Kirkin v Lukas Neumayer [209] | 7-5,2-6,6-1 | |
| Challenger Bad Waltersdorf | 09/18 10:05 | 19 | [343] Ergi Kirkin v Neil Oberleitner [165] | 6-7,6-4,6-2 | |
| Challenger Bad Waltersdorf | 09/17 14:00 | 14 | Ergi Kirkin v Matthias Ujvary | 6-2,6-2 | |
| Davis Cup | 09/16 10:25 | 4 | Matyas Fuele v Ergi Kirkin | 7-6,6-2 | |
| Challenger Istanbul | 09/06 09:00 | 26 | [368] Ergi Kirkin v Lukas Klein [155] | 3-6,4-6 | |
| Challenger Istanbul | 09/04 13:35 | 25 | [327] Marek Gengel v Ergi Kirkin [368] | 1-6,2-6 | |
| ITF M25 Tainan | 08/26 01:55 | 28 | Ergi Kirkin v Matyas Fuele | 1-6,6-4,3-6 | |
| ITF M25 Tainan | 08/25 02:00 | 27 | Ergi Kirkin v Takuya Kumasaka | 6-2,6-2 | |
| ITF M25 Tainan | 08/24 02:00 | 26 | Ergi Kirkin v Tomohiro Masabayashi | 6-4,6-3 | |
| ITF M25 Tainan | 08/23 04:20 | 25 | [421] Ergi Kirkin v Seita Watanabe [364] | 4-6,7-6,6-3 | |
| ITF M25 Tainan | 08/20 02:00 | 29 | Ergi Kirkin v Makoto Ochi | 6-0,6-2 | |
| ITF M25 Tainan | 08/19 01:55 | 28 | [420] Ergi Kirkin v Tsung-Hao Huang [445] | 6-3,6-0 | |
| ITF M25 Tainan | 08/18 02:00 | 27 | Ergi Kirkin v Bang Shuo Yin | 7-6,7-5 | |
| ITF M25 Tainan | 08/17 02:00 | 26 | [420] Ergi Kirkin v Naoki Tajima [457] | 6-3,6-4 |
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.