| 2019-04-20 | UFC Fight Night: Overeem vs. Oleinik | Welterweight | Sultan Aliev def. Keita Nakamura | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2018-12-02 | UFC Fight Night: dos Santos vs. Tuivasa | Welterweight | Keita Nakamura def. Salim Touahri | Decision (split) (30–27, 28–29, 29–28) | 3 | 5:00 |
| 2018-04-21 | UFC Fight Night: Barboza vs. Lee | Welterweight | Anthony Rocco Martin def. Keita Nakamura | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2017-09-23 | UFC Fight Night: Saint Preux vs. Okami | Welterweight | Keita Nakamura def. Alex Morono | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2016-10-01 | UFC Fight Night: Lineker vs. Dodson | Welterweight | Elizeu Zaleski dos Santos def. Keita Nakamura | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2016-07-13 | UFC Fight Night: McDonald vs. Lineker | Welterweight | Keita Nakamura def. Kyle Noke | Submission (rear-naked choke) | 2 | 4:59 |
| 2016-02-27 | UFC Fight Night: Silva vs. Bisping | Welterweight | Tom Breese def. Keita Nakamura | Decision (unanimous) (30–27, 30–27, 29–28) | 3 | 5:00 |
| 2015-09-27 | UFC Fight Night: Barnett vs. Nelson | Welterweight | Keita Nakamura def. Li Jingliang | Technical Submission (standing rear-naked choke) | 3 | 2:17 |
| 2008-02-02 | UFC 81: Breaking Point | Lightweight | Rob Emerson def. Keita Nakamura | Decision (split) (30–27, 28–29, 30–27) | 3 | 5:00 |
| 2007-04-05 | UFC Fight Night: Stevenson vs. Guillard | Welterweight | Drew Fickett def. Keita Nakamura | Decision (unanimous) (29–27, 29–27, 30–26) | 3 | 5:00 |
| 2006-12-13 | UFC Fight Night: Sanchez vs. Riggs | Welterweight | Brock Larson def. Keita Nakamura | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |