| 2021-01-24 | UFC 257: Poirier vs. McGregor 2 | Catchweight | Movsar Evloev def. Nik Lentz | Decision (split) (28–29, 29–28, 29–28) | 3 | 5:00 |
| 2020-01-25 | UFC Fight Night: Blaydes vs. dos Santos | Featherweight | Arnold Allen def. Nik Lentz | Decision (unanimous) (29–28, 29–28, 30–27) | 3 | 5:00 |
| 2019-05-18 | UFC Fight Night: dos Anjos vs. Lee | Lightweight | Charles Oliveira def. Nik Lentz | TKO (punches) | 2 | 2:11 |
| 2019-02-17 | UFC on ESPN: Ngannou vs. Velasquez | Lightweight | Nik Lentz def. Scott Holtzman | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2018-10-06 | UFC 229: Khabib vs. McGregor | Lightweight | Nik Lentz def. Gray Maynard | TKO (head kick and punches) | 2 | 1:19 |
| 2018-06-01 | UFC Fight Night: Rivera vs. Moraes | Lightweight | David Teymur def. Nik Lentz | Decision (unanimous) (30–27, 30–27, 29–28) | 3 | 5:00 |
| 2017-11-19 | UFC Fight Night: Werdum vs. Tybura | Lightweight | Nik Lentz def. Will Brooks | Submission (guillotine choke) | 2 | 2:05 |
| 2017-02-11 | UFC 208: Holm vs. de Randamie | Lightweight | Islam Makhachev def. Nik Lentz | Decision (unanimous) (30–25, 30–25, 30–27) | 3 | 5:00 |
| 2016-09-10 | UFC 203: Miocic vs. Overeem | Catchweight | Nik Lentz def. Michael McBride | TKO (punches) | 2 | 4:17 |
| 2015-12-19 | UFC on Fox: dos Anjos vs. Cowboy 2 | Lightweight | Nik Lentz def. Danny Castillo | Decision (split) (28–29, 29–28, 30–27) | 3 | 5:00 |
| 2015-05-30 | UFC Fight Night: Condit vs. Alves | Featherweight | Charles Oliveira def. Nik Lentz | Submission (guillotine choke) | 3 | 1:10 |
| 2014-05-10 | UFC Fight Night: Brown vs. Silva | Featherweight | Nik Lentz def. Manny Gamburyan | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2013-12-14 | UFC on Fox: Johnson vs. Benavidez 2 | Featherweight | Chad Mendes def. Nik Lentz | Decision (unanimous) (30–27, 30–27, 29–28) | 3 | 5:00 |
| 2013-05-18 | UFC on FX: Belfort vs. Rockhold | Featherweight | Nik Lentz def. Hacran Dias | Decision (unanimous) (28–27, 29–28, 29–28) | 3 | 5:00 |
| 2013-01-19 | UFC on FX: Belfort vs. Bisping | Featherweight | Nik Lentz def. Diego Nunes | Decision (unanimous) (30–28, 30–27, 30–26) | 3 | 5:00 |
| 2012-08-11 | UFC 150: Henderson vs. Edgar II | Featherweight | Nik Lentz def. Eiji Mitsuoka | TKO (punches) | 1 | 3:45 |
| 2012-01-28 | UFC on Fox: Evans vs. Davis | Lightweight | Evan Dunham def. Nik Lentz | TKO (doctor stoppage) | 2 | 5:00 |
| 2011-12-10 | UFC 140: Jones vs. Machida | Lightweight | Mark Bocek def. Nik Lentz | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2011-06-26 | UFC Live: Kongo vs. Barry | Lightweight | Charles Oliveira vs. Nik Lentz | No Contest (illegal knee) | 2 | 1:48 |
| 2011-03-26 | UFC Fight Night: Nogueira vs. Davis | Lightweight | Nik Lentz def. Waylon Lowe | Submission (guillotine choke) | 3 | 2:24 |
| 2010-11-20 | UFC 123: Rampage vs. Machida | Lightweight | Nik Lentz def. Tyson Griffin | Decision (split) (29–28, 27–30, 29–28) | 3 | 5:00 |
| 2010-08-28 | UFC 118: Edgar vs. Penn 2 | Lightweight | Nik Lentz def. Andre Winner | Decision (unanimous) (30–27, 29–28, 30–27) | 3 | 5:00 |
| 2010-03-31 | UFC Fight Night: Florian vs. Gomi | Lightweight | Nik Lentz def. Rob Emerson | Decision (unanimous) (29–28, 30–27, 29–28) | 3 | 5:00 |
| 2010-01-11 | UFC Fight Night: Maynard vs. Diaz | Lightweight | Thiago Tavares vs. Nik Lentz | Draw (majority) (28–28, 28–28, 27–29) | 3 | 5:00 |
| 2009-09-19 | UFC 103: Franklin vs. Belfort | Lightweight | Nik Lentz def. Rafaello Oliveira | Decision (unanimous) (29–28, 29–28, 30–27) | 3 | 5:00 |