| 2024-09-14 | UFC 306: O'Malley vs. Dvalishvili | Women’s Bantamweight | Norma Dumont def. Irene Aldana | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2023-12-16 | UFC 296: Edwards vs. Covington | Women’s Bantamweight | Irene Aldana def. Karol Rosa | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2023-06-10 | UFC 289: Nunes vs. Aldana | Women’s Bantamweight | Amanda Nunes def. Irene Aldana title | Decision (unanimous) (50–44, 50–44, 50–43) | 5 | 5:00 |
| 2022-09-10 | UFC 279: Diaz vs. Ferguson | Catchweight | Irene Aldana def. Macy Chiasson | KO (upkick to the body) | 3 | 2:21 |
| 2021-07-10 | UFC 264: Poirier vs. McGregor 3 | Catchweight | Irene Aldana def. Yana Kunitskaya | TKO (punches) | 1 | 4:35 |
| 2020-10-04 | UFC on ESPN: Holm vs. Aldana | Women’s Bantamweight | Holly Holm def. Irene Aldana | Decision (unanimous) (50–44, 50–45, 50–45) | 5 | 5:00 |
| 2019-12-14 | UFC 245: Usman vs. Covington | Women’s Bantamweight | Irene Aldana def. Ketlen Vieira | KO (punches) | 1 | 4:51 |
| 2019-09-21 | UFC Fight Night: Rodríguez vs. Stephens | Catchweight | Irene Aldana def. Vanessa Melo | Decision (unanimous) (30–26, 30–26, 30–26) | 3 | 5:00 |
| 2019-07-20 | UFC on ESPN: dos Anjos vs. Edwards | Women’s Bantamweight | Raquel Pennington def. Irene Aldana | Decision (split) (28–29, 29–28, 29–28) | 3 | 5:00 |
| 2019-05-11 | UFC 237: Namajunas vs. Andrade | Catchweight | Irene Aldana def. Bethe Correia | Submission (armbar) | 3 | 3:24 |
| 2018-09-08 | UFC 228: Woodley vs. Till | Women’s Bantamweight | Irene Aldana def. Lucie Pudilová | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2018-01-14 | UFC Fight Night: Stephens vs. Choi | Women’s Bantamweight | Irene Aldana def. Talita Bernardo | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2017-04-08 | UFC 210: Cormier vs. Johnson 2 | Women’s Bantamweight | Katlyn Chookagian def. Irene Aldana | Decision (split) (28–29, 29–28, 29–28) | 3 | 5:00 |
| 2016-12-17 | UFC on Fox: VanZant vs. Waterson | Women’s Bantamweight | Leslie Smith def. Irene Aldana | Decision (unanimous) (29–28, 29–28, 30–27) | 3 | 5:00 |