| 2019-05-04 | UFC Fight Night: Iaquinta vs. Cowboy | Middleweight | Derek Brunson def. Elias Theodorou | Decision (unanimous) (29–28, 29–28, 30–27) | 3 | 5:00 |
| 2018-12-08 | UFC 231: Holloway vs. Ortega | Middleweight | Elias Theodorou def. Eryk Anders | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2018-05-27 | UFC Fight Night: Thompson vs. Till | Middleweight | Elias Theodorou def. Trevor Smith | Decision (unanimous) (30–27, 30–27, 29–28) | 3 | 5:00 |
| 2017-11-19 | UFC Fight Night: Werdum vs. Tybura | Middleweight | Elias Theodorou def. Dan Kelly | Decision (unanimous) (30–28, 30–27, 30–26) | 3 | 5:00 |
| 2017-07-07 | The Ultimate Fighter: Redemption Finale | Middleweight | Brad Tavares def. Elias Theodorou | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2017-02-19 | UFC Fight Night: Lewis vs. Browne | Middleweight | Elias Theodorou def. Cezar Ferreira | Decision (unanimous) (30–27, 29–28, 29–28) | 3 | 5:00 |
| 2016-06-18 | UFC Fight Night: MacDonald vs. Thompson | Middleweight | Elias Theodorou def. Sam Alvey | Decision (unanimous) (29–28, 30–27, 30–27) | 3 | 5:00 |
| 2015-12-10 | UFC Fight Night: Namajunas vs. VanZant | Middleweight | Thiago Santos def. Elias Theodorou | Decision (unanimous) (29–28, 29–27, 29–27) | 3 | 5:00 |
| 2015-03-14 | UFC 185: Pettis vs. dos Anjos | Middleweight | Elias Theodorou def. Roger Narvaez | TKO (punches) | 2 | 4:07 |
| 2014-10-04 | UFC Fight Night: MacDonald vs. Saffiedine | Middleweight | Elias Theodorou def. Bruno Santos | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2014-04-16 | The Ultimate Fighter Nations Finale: Bisping vs. Kennedy | Middleweight | Elias Theodorou def. Sheldon Westcott | TKO (punches and elbows) | 2 | 4:41 |