| Piet van Gammeren | |
| Birth Place: | Netherlands |
| Nationality: | Dutch |
| Weight Class: | Heavyweight |
| Team: | Loek's Gym |
| Years Active: | 1997 - 2002 |
| Mma Kowin: | 1 |
| Mma Subwin: | 1 |
| Mma Decwin: | 3 |
| Mma Otherwin: | 2 |
| Mma Koloss: | 6 |
| Mma Otherloss: | 1 |
| Mma Draw: | 1 |
| Sherdog: | 2213 |
Piet van Gammeren is a Dutch[1] mixed martial artist.[2] He competed in the Heavyweight[3] division.
|-| Loss| align=center| 7–7–1| Michailis Deligiannakis| TKO| FFG: Fight Night| | align=center| 2| align=center| 0:00| Crete, Greece| |-| Loss| align=center| 7–6–1| Paul Cahoon| KO (punch)| 2H2H 3: Hotter Than Hot| | align=center| 1| align=center| 1:24| Rotterdam, South Holland, Netherlands| |-| Loss| align=center| 7–5–1| Edmunds Kirsis| Disqualification| BOA 3: Battle of Arnhem 3| | align=center| 1| align=center| 0:00| Arnhem, Gelderland, Netherlands| |-| Win| align=center| 7–4–1| Herman Renting| Decision (unanimous)| Rings Holland: Heroes Live Forever| | align=center| 2| align=center| 5:00| Utrecht, Netherlands| |-| Win| align=center| 6–4–1| Peter Verschuren| Decision (unanimous)| Rings Holland: The Kings of the Magic Ring| | align=center| 3| align=center| 3:00| Utrecht, Netherlands| |-| Loss| align=center| 5–4–1| Can Sahinbas| TKO (cut)| IMA: Back to the Roots| | align=center| 0| align=center| 0:00| Hoofddorp, North Holland, Netherlands| |-| Loss| align=center| 5–3–1| Michael Tielrooy| KO| IMA: Mix Fight Gala| | align=center| 0| align=center| 0:00| Landsmeer, North Holland, Netherlands| |-| Draw| align=center| 5–2–1| Stef Stricker| Draw| FFH: Free Fight Gala| | align=center| 0| align=center| 0:00| Beverwijk, North Holland, Netherlands| |-| Loss| align=center| 5–2| Dave van der Veen| TKO (cut)| Rings Holland: The Thialf Explosion| | align=center| 0| align=center| 0:00| Heerenveen, Friesland, Netherlands| |-| Win| align=center| 5–1| Ferry van de Wal| Decision (1-0 points)| IMA: KO Power Tournament| | align=center| 1| align=center| 10:00| Amsterdam, North Holland, Netherlands| |-| Loss| align=center| 4–1| Danielius Razmus| TKO (submission to strikes)| M-1 MFC: European Championship 1998| | align=center| 1| align=center| 0:00| Saint Petersburg, Russia| |-| Win| align=center| 4–0| Sergei Akinin| Submission (smother)| M-1 MFC: European Championship 1998| | align=center| 1| align=center| 0:00| Saint Petersburg, Russia| |-| Win| align=center| 3–0| Jerry Kalia| TKO (knee injury)| Rings Holland: The King of Rings| | align=center| 2| align=center| 0:19| North Holland, Netherlands| |-| Win| align=center| 2–0| Gerard Benschop| N/A| FFH: Free Fight Gala| | align=center| 0| align=center| 0:00| Beverwijk, North Holland, Netherlands| |-| Win| align=center| 1–0| Broede van Deutekom| N/A| Gym Alkmaar: Fight Gala| | align=center| 0| align=center| 0:00| Bergen, North Holland, Netherlands|