| 2025-03-22 | UFC Fight Night: Edwards vs. Brady | Welterweight | Kevin Holland def. Gunnar Nelson | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2023-03-18 | UFC 286: Edwards vs. Usman 3 | Welterweight | Gunnar Nelson def. Bryan Barberena | Submission (armbar) | 1 | 4:51 |
| 2022-03-19 | UFC Fight Night: Volkov vs. Aspinall | Welterweight | Gunnar Nelson def. Takashi Sato | Decision (unanimous) (30–26, 30–26, 30–26) | 3 | 5:00 |
| 2019-09-28 | UFC Fight Night: Hermansson vs. Cannonier | Welterweight | Gilbert Burns def. Gunnar Nelson | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2019-03-16 | UFC Fight Night: Till vs. Masvidal | Welterweight | Leon Edwards def. Gunnar Nelson | Decision (split) (29–27, 29–28, 28–29) | 3 | 5:00 |
| 2018-12-08 | UFC 231: Holloway vs. Ortega | Welterweight | Gunnar Nelson def. Alex Oliveira | Submission (rear-naked choke) | 2 | 4:17 |
| 2017-07-16 | UFC Fight Night: Nelson vs. Ponzinibbio | Welterweight | Santiago Ponzinibbio def. Gunnar Nelson | KO (punches) | 1 | 1:22 |
| 2017-03-18 | UFC Fight Night: Manuwa vs. Anderson | Welterweight | Gunnar Nelson def. Alan Jouban | Submission (guillotine choke) | 2 | 0:46 |
| 2016-05-08 | UFC Fight Night: Overeem vs. Arlovski | Welterweight | Gunnar Nelson def. Albert Tumenov | Submission (rear-naked choke) | 2 | 3:15 |
| 2015-12-12 | UFC 194: Aldo vs. McGregor | Welterweight | Demian Maia def. Gunnar Nelson | Decision (unanimous) (30–26, 30–25, 30–25) | 3 | 5:00 |
| 2015-07-11 | UFC 189: Mendes vs. McGregor | Welterweight | Gunnar Nelson def. Brandon Thatch | Submission (rear-naked choke) | 1 | 2:54 |
| 2014-10-04 | UFC Fight Night: Nelson vs. Story | Welterweight | Rick Story def. Gunnar Nelson | Decision (split) (47–48, 49–46, 50–44) | 5 | 5:00 |
| 2014-07-19 | UFC Fight Night: McGregor vs. Brandão | Welterweight | Gunnar Nelson def. Zak Cummings | Submission (rear-naked choke) | 2 | 4:48 |
| 2014-03-08 | UFC Fight Night: Gustafsson vs. Manuwa | Welterweight | Gunnar Nelson def. Omari Akhmedov | Submission (guillotine choke) | 1 | 4:36 |
| 2013-02-16 | UFC on Fuel TV: Barão vs. McDonald | Welterweight | Gunnar Nelson def. Jorge Santiago | Decision (unanimous) (29–28, 29–28, 30–27) | 3 | 5:00 |
| 2012-09-29 | UFC on Fuel TV: Struve vs. Miocic | Catchweight | Gunnar Nelson def. DaMarques Johnson | Submission (rear-naked choke) | 1 | 3:34 |