| US Open, New York, USA | 08/22 17:00 | 45 | [194] Tallon Griekspoor v Cem Ilkel [258] | 7-5,6-3 | |
| US Open, New York, USA | 08/20 21:50 | 44 | [258] Cem Ilkel v Quiroz, Roberto [245] | 6-1,6-4 | |
| Challenger Granby | 07/25 14:00 | 26 | [249] Cem Ilkel v Li, Zhe [224] | 6-4,6-7,5-7 | |
| Challenger Granby | 07/23 17:05 | 25 | [197] Maxime Janvier v Cem Ilkel [249] | 5-7,3-6 | |
| Challenger Granby | 07/22 17:30 | 24 | [249] Cem Ilkel v Grills, Jacob [387] | 6-1,6-0 | |
| Gatineau, Canada | 07/18 15:40 | 26 | [259] Cem Ilkel v Marc Polmans [183] | 3-6,6-1,1-6 | |
| Gatineau, Canada | 07/16 18:20 | 25 | [176] Torpegaard, Mikael v Cem Ilkel [259] | 4-6,6-4,2-6 | |
| Gatineau, Canada | 07/15 20:05 | 24 | [248] Banes, Maverick v Cem Ilkel [259] | 3-6,2-6 | |
| Challenger Winnipeg | 07/12 18:15 | 27 | [253] Hiroki Moriya v Cem Ilkel [272] | 6-4,6-2 | |
| Challenger Winnipeg | 07/11 20:00 | 26 | [272] Cem Ilkel v Ortega-Olmedo, Roberto [282] | 7-6,6-3 | |
| Challenger Winnipeg | 07/10 15:00 | 25 | [191] Maxime Janvier v Cem Ilkel [272] | 6-7,1-6 | |
| Challenger Winnipeg | 07/08 19:05 | 24 | [315] Gojo, Borna v Cem Ilkel [272] | 4-6,6-4,3-6 | |
| Antalya, Turquie | 06/25 12:40 | 25 | [277] Krawietz, Kevin v Cem Ilkel [271] | 6-4,6-4 | |
| Fergana, Uzbekistan | 06/22 09:05 | 28 | [278] Cem Ilkel v Roberto Cid Subervi [340] | 6-2,1-6,6-7 | |
| Fergana, Uzbekistan | 06/21 07:40 | 27 | [308] Aleksandar Vukic v Cem Ilkel [278] | 3-6,4-6 | |
| Fergana, Uzbekistan | 06/20 08:25 | 26 | [332] Aldin Setkic v Cem Ilkel [278] | 6-3,3-6,4-6 | |
| Fergana, Uzbekistan | 06/19 05:00 | 25 | [389] Sebastian Korda v Cem Ilkel [278] | 6-7,7-6,3-6 | |
| Challenger - Nottingham | 06/11 15:55 | 24 | [191] Soeda, Go v Cem Ilkel [275] | 6-2,6-0 | |
| Surbiton, Great Britain | 06/05 16:45 | 25 | [130] Alex Bolt v Cem Ilkel [281] | 7-6,6-1 | |
| Surbiton, Great Britain | 06/04 10:00 | 24 | [313] Luke Saville v Cem Ilkel [281] | 4-6,3-6 | |
| Challenger - Gwangju | 05/16 04:10 | 26 | [281] Cem Ilkel v Lacko, Lukas [146] | Retired | |
| Challenger - Gwangju | 05/15 03:40 | 25 | [247] Max Purcell v Cem Ilkel [281] | 1-6,7-6,5-7 | |
| Challenger - Gwangju | 05/13 03:55 | 24 | [281] Cem Ilkel v King, Kevin [349] | 7-5,6-2 | |
| Challenger - Busan | 05/09 04:40 | 26 | [160] Tatsuma Ito v Cem Ilkel [265] | 7-5,6-7,6-4 | |
| Challenger - Busan | 05/08 06:20 | 25 | [265] Cem Ilkel v Ramkumar Ramanathan [147] | 6-1,7-6 | |
| Challenger - Busan | 05/06 07:40 | 24 | [265] Cem Ilkel v Nam, Ji Sung [364] | 6-4,7-6 | |
| Challenger Seoul | 04/29 03:55 | 24 | [265] Cem Ilkel v Yasutaka Uchiyama [227] | 3-6,6-1,3-6 | |
| Challenger - Taipei | 04/09 13:50 | 25 | [274] Cem Ilkel v Sugita, Yuichi [188] | 5-7,3-6 | |
| Challenger - Taipei | 04/08 05:00 | 24 | [266] Mukund, S. v Cem Ilkel [274] | 3-6,4-6 | |
| Challenger St Brieuc | 03/26 17:30 | 25 | [136] Corentin Moutet v Cem Ilkel [276] | 6-2,4-6,6-1 |
Cem Ilkel (born 21 August 1995) is a Turkish tennis player.
İlkel has a career high ATP singles ranking of No. 144 achieved on 29 November 2021. He also has a career high ATP doubles ranking of No. 299 achieved on 27 August 2018. He has won one ATP Challenger title in singles. He is currently the No. 1 Turkish player. Ilkel has a singles final record of 5 wins and 20 losses, and a doubles final record of 13 wins and 11 losses.