| 2021-06-12 | UFC 263: Adesanya vs. Vettori 2 | Welterweight | Belal Muhammad def. Demian Maia | Decision (unanimous) (30–27, 29–28, 29–28) | 3 | 5:00 |
| 2020-03-14 | UFC Fight Night: Lee vs. Oliveira | Welterweight | Gilbert Burns def. Demian Maia | TKO (punches) | 1 | 2:34 |
| 2019-10-26 | UFC Fight Night: Maia vs. Askren | Welterweight | Demian Maia def. Ben Askren | Technical Submission (rear-naked choke) | 3 | 3:54 |
| 2019-06-29 | UFC on ESPN: Ngannou vs. dos Santos | Welterweight | Demian Maia def. Anthony Rocco Martin | Decision (majority) (29–28, 29–28, 28–28) | 3 | 5:00 |
| 2019-02-02 | UFC Fight Night: Assunção vs. Moraes 2 | Welterweight | Demian Maia def. Lyman Good | Submission (rear-naked choke) | 1 | 2:38 |
| 2018-05-19 | UFC Fight Night: Maia vs. Usman | Welterweight | Kamaru Usman def. Demian Maia | Decision (unanimous) (50–45, 49–46, 49–46) | 5 | 5:00 |
| 2017-10-28 | UFC Fight Night: Brunson vs. Machida | Welterweight | Colby Covington def. Demian Maia | Decision (unanimous) (29–27, 30–27, 30–26) | 3 | 5:00 |
| 2017-07-29 | UFC 214: Cormier vs. Jones 2 | Welterweight | Tyron Woodley def. Demian Maia title | Decision (unanimous) (50–45, 49–46, 49–46) | 5 | 5:00 |
| 2017-05-13 | UFC 211: Miocic vs. dos Santos 2 | Welterweight | Demian Maia def. Jorge Masvidal | Decision (split) (29–28, 28–29, 29–28) | 3 | 5:00 |
| 2016-08-27 | UFC on Fox: Maia vs. Condit | Welterweight | Demian Maia def. Carlos Condit | Submission (rear-naked choke) | 1 | 1:52 |
| 2016-05-14 | UFC 198: Werdum vs. Miocic | Welterweight | Demian Maia def. Matt Brown | Submission (rear-naked choke) | 3 | 4:31 |
| 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 |
| 2015-08-01 | UFC 190: Rousey vs. Correia | Welterweight | Demian Maia def. Neil Magny | Submission (rear-naked choke) | 2 | 2:52 |
| 2015-03-21 | UFC Fight Night: Maia vs. LaFlare | Welterweight | Demian Maia def. Ryan LaFlare | Decision (unanimous) (48–46, 48–46, 48–46) | 5 | 5:00 |
| 2014-05-31 | The Ultimate Fighter Brazil 3 Finale: Miocic vs. Maldonado | Welterweight | Demian Maia def. Alexander Yakovlev | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2014-02-22 | UFC 170: Rousey vs. McMann | Welterweight | Rory MacDonald def. Demian Maia | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2013-10-09 | UFC Fight Night: Maia vs. Shields | Welterweight | Jake Shields def. Demian Maia | Decision (split) (48–47, 47–48, 48–47) | 5 | 5:00 |
| 2013-02-02 | UFC 156: Aldo vs. Edgar | Welterweight | Demian Maia def. Jon Fitch | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2012-10-13 | UFC 153: Silva vs. Bonnar | Welterweight | Demian Maia def. Rick Story | Submission (neck crank) | 1 | 2:30 |
| 2012-07-07 | UFC 148: Silva vs. Sonnen II | Welterweight | Demian Maia def. Kim Dong-hyun | TKO (rib injury) | 1 | 0:47 |
| 2012-01-28 | UFC on Fox: Evans vs. Davis | Middleweight | Chris Weidman def. Demian Maia | Decision (unanimous) (29–28, 30–27, 29–28) | 3 | 5:00 |
| 2011-10-08 | UFC 136: Edgar vs. Maynard III | Middleweight | Demian Maia def. Jorge Santiago | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2011-06-11 | UFC 131: dos Santos vs. Carwin | Middleweight | Mark Muñoz def. Demian Maia | Decision (unanimous) (29–28, 29–28, 30–27) | 3 | 5:00 |
| 2010-12-04 | The Ultimate Fighter: Team GSP vs. Team Koscheck Finale | Middleweight | Demian Maia def. Kendall Grove | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |
| 2010-08-28 | UFC 118: Edgar vs. Penn 2 | Middleweight | Demian Maia def. Mario Miranda | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2010-04-10 | UFC 112: Invincible | Middleweight | Anderson Silva def. Demian Maia title | Decision (unanimous) (50–45, 50–45, 49–46) | 5 | 5:00 |
| 2010-02-06 | UFC 109: Relentless | Middleweight | Demian Maia def. Dan Miller | Decision (unanimous) (30–27, 29–28, 29–28) | 3 | 5:00 |
| 2009-08-29 | UFC 102: Couture vs. Nogueira | Middleweight | Nate Marquardt def. Demian Maia | KO (punch) | 1 | 0:21 |
| 2009-02-21 | UFC 95: Sanchez vs. Stevenson | Middleweight | Demian Maia def. Chael Sonnen | Submission (triangle choke) | 1 | 2:37 |
| 2008-11-15 | UFC 91: Couture vs. Lesnar | Middleweight | Demian Maia def. Nate Quarry | Submission (rear-naked choke) | 1 | 2:13 |
| 2008-08-09 | UFC 87: Seek and Destroy | Middleweight | Demian Maia def. Jason MacDonald | Submission (rear-naked choke) | 3 | 2:44 |
| 2008-04-19 | UFC 83: Serra vs. St-Pierre 2 | Middleweight | Demian Maia def. Ed Herman | Technical Submission (mounted triangle choke) | 2 | 2:27 |
| 2007-10-20 | UFC 77: Hostile Territory | Middleweight | Demian Maia def. Ryan Jensen | Submission (rear-naked choke) | 1 | 2:40 |