| Fighter | Record | Last Bout |
|---|---|---|
| Aaron Phillips | 12-5-0 | 2023-04-15 |
| Aaron Pico | 14-5-0 | 2026-10-24 |
| Ailin Perez | 13-2-0 | 2026-09-26 |
| Alan Patrick | 15-4-0 (1 NC) | 2022-05-14 |
| Alejandro Perez | 23-9-1 | 2022-02-26 |
| Alex Pereira | 13-4-0 | 2026-06-14 |
| Alex Perez | 26-11-0 (1 NC) | 2026-08-29 |
| Alexander Poppeck | 21-6-0 (1 NC) | 2026-08-01 |
| Alexandre Pantoja | 30-6-0 | 2026-09-19 |
| Alice Pereira | 7-1-0 | 2026-04-04 |
| Andre Pederneiras | 1-1-2 | 1999-07-16 |
| Andre Petroski | 13-6-0 | 2026-05-16 |
| Andrey Pulyaev | 10-5-0 | 2026-10-03 |
| Angel Pacheco | 7-4-0 | 2026-02-28 |
| Anthony Perosh | 15-10-0 | 2015-11-14 |
| Anthony Pettis | 24-10-0 | 2020-12-19 |
| Armen Petrosyan | 9-5-0 | 2025-03-08 |
| BJ Penn | 16-14-2 | 2019-05-11 |
| Bart Palaszewski | 36-17-0 | 2013-04-13 |
| Brad Pickett | 25-14-0 | 2017-03-18 |
| Brando Pericic | 7-1-0 | 2026-05-02 |
| CM Punk | 0-1-0 (1 NC) | 2018-06-09 |
| Callan Potter | 18-9-0 | 2020-02-22 |
| Carlo Pedersoli Jr. | 11-3-0 | 2019-02-23 |
| Carlo Prater | 31-18-1 | 2012-10-05 |
| Carlos Prates | 24-7-0 | 2026-05-02 |
| Cathal Pendred | 17-4-1 | 2015-10-24 |
| Chris Padilla | 18-6-1 | 2026-08-22 |
| Chris Price | 19-4-0 | 2007-01-25 |
| Claude Patrick | 14-2-0 | 2011-12-10 |
| Claudio Puelles | 13-5-0 | 2025-09-13 |
| Cody Pfister | 13-6-1 | 2016-07-13 |
| Constantinos Philippou | 13-5-0 (1 NC) | 2015-05-16 |
| Damacio Page | 19-10-0 | 2012-07-11 |
| Damian Pinas | 10-1-0 | 2026-10-03 |
| Daniel Pineda | 28-17-0 (3 NC) | 2024-10-19 |
| Devin Powell | 9-4-0 | 2018-11-17 |
| Domingo Pilarte | 8-3-0 (1 NC) | 2021-08-21 |
| Dorian Price | 8-5-0 | 2007-12-08 |
| Dricus Du Plessis | 24-3-0 | 2026-07-18 |
| Dustin Pague | 12-11-0 | 2013-10-19 |
| Dustin Poirier | 30-10-0 (1 NC) | 2025-07-19 |
| Elizabeth Phillips | 6-6-0 | 2016-08-20 |
| Erik Perez | 17-6-0 | 2016-11-05 |
| Estevan Payan | 16-12-0 (1 NC) | 2014-04-19 |
| Fernando Padilla | 16-6-0 | 2024-12-14 |
| Filip Pejic | 12-2-2 | 2016-04-10 |
| Forrest Petz | 26-10-0 | 2010-09-15 |
| Francisco Prado | 12-5-0 | 2026-04-11 |
| Frankie Perez | 10-4-0 | 2017-07-22 |