| 2022-05-14 | UFC on ESPN: Błachowicz vs. Rakić | Bantamweight | Davey Grant def. Louis Smolka | KO (punches) | 3 | 0:49 |
| 2021-12-04 | UFC on ESPN: Font vs. Aldo | Bantamweight | Vince Morales def. Louis Smolka | KO (punches) | 1 | 2:02 |
| 2020-12-05 | UFC on ESPN: Hermansson vs. Vettori | Bantamweight | Louis Smolka def. José Alberto Quiñónez | TKO (punches) | 2 | 2:15 |
| 2020-05-30 | UFC on ESPN: Woodley vs. Burns | Bantamweight | Casey Kenney def. Louis Smolka | Submission (guillotine choke) | 1 | 3:03 |
| 2019-09-14 | UFC Fight Night: Cowboy vs. Gaethje | Bantamweight | Louis Smolka def. Ryan MacDonald | TKO (punches) | 1 | 4:43 |
| 2019-03-09 | UFC Fight Night: Lewis vs. dos Santos | Bantamweight | Matt Schnell def. Louis Smolka | Submission (triangle choke) | 1 | 3:18 |
| 2018-11-24 | UFC Fight Night: Blaydes vs. Ngannou 2 | Bantamweight | Louis Smolka def. Su Mudaerji | Submission (armbar) | 2 | 2:07 |
| 2017-12-30 | UFC 219: Cyborg vs. Holm | Flyweight | Matheus Nicolau def. Louis Smolka | Decision (unanimous) (30–26, 30–26, 30–25) | 3 | 5:00 |
| 2017-04-15 | UFC on Fox: Johnson vs. Reis | Flyweight | Tim Elliott def. Louis Smolka | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2016-12-30 | UFC 207: Nunes vs. Rousey | Catchweight | Ray Borg def. Louis Smolka | Decision (unanimous) (30–27, 30–26, 30–26) | 3 | 5:00 |
| 2016-10-01 | UFC Fight Night: Lineker vs. Dodson | Flyweight | Brandon Moreno def. Louis Smolka | Submission (guillotine choke) | 1 | 2:23 |
| 2016-07-13 | UFC Fight Night: McDonald vs. Lineker | Flyweight | Louis Smolka def. Ben Nguyen | TKO (punches and elbows) | 2 | 4:41 |
| 2015-10-24 | UFC Fight Night: Holohan vs. Smolka | Flyweight | Louis Smolka def. Paddy Holohan | Submission (rear-naked choke) | 2 | 4:09 |
| 2015-07-11 | UFC 189: Mendes vs. McGregor | Flyweight | Louis Smolka def. Neil Seery | Decision (unanimous) (30–27, 30–27, 30–27) | 3 | 5:00 |
| 2014-11-08 | UFC Fight Night: Rockhold vs. Bisping | Flyweight | Louis Smolka def. Richie Vaculik | TKO (side kick and punches) | 3 | 0:18 |
| 2014-05-10 | UFC Fight Night: Brown vs. Silva | Flyweight | Chris Cariaso def. Louis Smolka | Decision (split) (28–29, 29–28, 29–28) | 3 | 5:00 |
| 2014-01-15 | UFC Fight Night: Rockhold vs. Philippou | Flyweight | Louis Smolka def. Alp Ozkilic | Decision (unanimous) (29–28, 29–28, 29–28) | 3 | 5:00 |