| Fighter | Record | Last Bout |
|---|---|---|
| Patricio Pitbull | 37-9-0 | 2026-09-19 |
| Patrick Cote | 23-11-0 | 2017-04-08 |
| Patrick Cummins | 10-7-0 | 2019-05-18 |
| Patrick Smith | 20-17-0 | 1995-07-14 |
| Patrick Walsh | 10-3-0 | 2015-02-14 |
| Patrick Williams | 8-6-0 | 2018-04-14 |
| Paul Bradley | 23-8-0 (2 NC) | 2011-11-12 |
| Paul Buentello | 35-17-0 | 2010-03-21 |
| Paul Craig | 17-10-1 (1 NC) | 2025-09-06 |
| Paul Creighton | 3-1-0 | 2002-05-10 |
| Paul Daley | 39-15-2 | 2010-05-08 |
| Paul Felder | 17-6-0 | 2020-11-14 |
| Paul Georgieff | 6-2-0 | 2007-12-08 |
| Paul Herrera | 1-1-0 | 1996-02-16 |
| Paul Jones | 11-1-1 | 1999-09-24 |
| Paul Kelly | 14-5-0 | 2011-02-05 |
| Paul Redmond | 12-7-0 | 2015-07-18 |
| Paul Rodriguez | 10-9-2 | 2001-06-29 |
| Paul Sass | 14-2-0 | 2013-02-16 |
| Paul Taylor | 11-6-1 (1 NC) | 2011-02-05 |
| Paul Varelans | 9-9-0 | 1996-12-07 |
| Paulo Costa | 16-4-0 | 2026-04-11 |
| Paulo Santos | 0-3-0 | 1998-10-16 |
| Paulo Thiago | 18-9-0 | 2014-09-13 |
| Pavel Andrusca | 9-0-0 | 2026-09-05 |
| Pawel Pawlak | 12-3-0 | 2015-07-18 |
| Payton Talbott | 11-1-0 | 2026-10-03 |
| Pearl Gonzalez | 6-3-0 | 2017-10-07 |
| Pedro Falcao | 16-5-0 | 2025-04-05 |
| Pedro Munhoz | 20-10-0 (2 NC) | 2024-11-02 |
| Pedro Nobre | 18-4-2 (1 NC) | 2013-01-19 |
| Pedro Rizzo | 20-11-0 | 2003-11-21 |
| Peggy Morgan | 4-4-0 | 2013-11-30 |
| Per Eklund | 14-5-1 | 2009-02-21 |
| Pete Rodriguez | 5-2-0 | 2024-02-03 |
| Pete Sell | 10-7-0 | 2009-03-07 |
| Pete Spratt | 25-23-0 | 2007-06-12 |
| Pete Williams | 12-6-0 | 2002-03-22 |
| Peter Barrett | 11-5-0 | 2020-12-12 |
| Peter Sobotta | 17-7-1 | 2020-07-25 |
| Petr Yan | 20-5-0 | 2026-10-24 |
| Phil Baroni | 15-18-0 | 2011-01-01 |
| Phil Davis | 17-4-0 (1 NC) | 2015-01-24 |
| Phil Harris | 22-12-0 (2 NC) | 2014-07-19 |
| Phil Hawes | 12-6-0 | 2024-01-13 |
| Phil Johns | 30-14-1 | 2001-02-23 |
| Phil Rowe | 11-7-0 | 2026-02-21 |
| Philip De Fries | 12-6-0 (1 NC) | 2013-04-06 |
| Philipe Lins | 18-5-0 | 2024-03-09 |
| Phillip Miller | 16-0-0 | 2002-11-22 |