| 2025-04-05 | UFC on ESPN: Emmett vs. Murphy | Women’s Flyweight | Dione Barbosa def. Diana Belbiţă | Submission (arm-triangle choke) | 1 | 4:13 |
| 2024-02-03 | UFC Fight Night: Dolidze vs. Imavov | Women’s Strawweight | Molly McCann def. Diana Belbiţă | Submission (armbar) | 1 | 4:59 |
| 2023-10-07 | UFC Fight Night: Dawson vs. Green | Women’s Strawweight | Karolina Kowalkiewicz def. Diana Belbiţă | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2023-06-10 | UFC 289: Nunes vs. Aldana | Women’s Strawweight | Diana Belbiţă def. Maria Oliveira | Decision (unanimous) (30–27, 30–27, 29–28) | 3 | 5:00 |
| 2022-02-19 | UFC Fight Night: Walker vs. Hill | Women’s Strawweight | Gloria de Paula def. Diana Belbiţă | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2021-07-24 | UFC on ESPN: Sandhagen vs. Dillashaw | Women’s Strawweight | Diana Belbiţă def. Hannah Goldy | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2020-07-16 | UFC on ESPN: Kattar vs. Ige | Women’s Flyweight | Liana Jojua def. Diana Belbiţă | Submission (armbar) | 1 | 2:47 |
| 2019-10-18 | UFC on ESPN: Reyes vs. Weidman | Women’s Flyweight | Molly McCann def. Diana Belbiţă | Decision (unanimous) (30–25, 30–25, 30–25) | 3 | 5:00 |