Peter Alan Williams (born July 10, 1975) is a former American mixed martial arts fighter who fought out of Ken Shamrock's Lion's Den team.
| Career Statistics: | |
| Knockout Wins: 2 (11%) | Knockout Losses: 0 (0%) |
| TKO Wins: 4 (22%) | TKO Losses: 2 (11%) |
| Submission Wins: 4 (22%) | Submission Losses: 1 (06%) |
| Decision Wins: 2 (11%) | Decision Losses: 3 (17%) |
| Draws: 0 | No Contests: 0 |
| Career Fights: | |||||
| Opponent | Method | Event | Date | Rnd | |
| Loss | Frank Mir | Submission | UFC 36: Worlds Collide | Mar. 22, 2002 | 1 |
| Loss | Ricco Rodriguez | Technical Knockout | UFC 34: High Voltage | Nov. 02, 2001 | 2 |
| Loss | Semmy Schilt | Technical Knockout | UFC 31: Locked Loaded | May. 04, 2001 | 2 |
| Win | Rick Mathis | Technical Knockout | KOTC 7: Wet and Wild | Feb. 24, 2001 | 1 |
| Win | Roger Neff | Knockout | KOTC 6: Road Warriors | Nov. 29, 2000 | 1 |
| Loss | Kevin Randleman | Decision | UFC 23: Ultimate Japan 2 | Nov. 19, 1999 | 5 |
| Win | Travis Fulton | Submission | UFC 20: Battle for the Gold | May. 07, 1999 | 1 |
| Win | Jason Godsey | Submission | UFC 19: Ultimate Young Guns | Mar. 05, 1999 | 1 |
| Loss | Tsuyoshi Kosaka | Decision | UFC 17.5: Ultimate Brazil | Oct. 16, 1998 | 1 |
| Win | Mark Coleman | Knockout | UFC 17: Redemption | May. 15, 1998 | 1 |
| Win | Scott McMullin | Technical Knockout | WPC: World Pankration Championships 2 | Jan. 16, 1998 | 1 |
| Win | Joop Kasteel | Technical Knockout | Rings: Extension Fighting 7 | Sep. 26, 1997 | 1 |
| Win | John Renfroe | Submission | SB 3: SuperBrawl 3 | Jan. 17, 1997 | 1 |
| Win | Joe Charles | Submission | SB 2: SuperBrawl 2 | Oct. 11, 1996 | 1 |
| Win | Donald de la Cruz | Technical Knockout | SB 2: SuperBrawl 2 | Oct. 11, 1996 | 1 |
| Loss | Yuki Kondo | Unanimous Decision | Pancrase: 1996 Neo-Blood Tournament, Round 2 | Jul. 23, 1996 | 1 |
| Win | Osami Shibuya | Unanimous Decision | Pancrase: 1996 Neo-Blood Tournament, Round 2 | Jul. 23, 1996 | 1 |
| Win | Kiuma Kunioku | Unanimous Decision | Pancrase: 1996 Neo-Blood Tournament, Round 1 | Jul. 22, 1996 | 1 |
| Total Fights: 18 | Record: 12 - 6 | |||||
Quarterly Rankings
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