Bret Bergmark (born November 24, 1973) is an American retired professional mixed martial artist.

After high school Bret took up rodeo bull riding, until a wrist injury forced him to retire.

It was at the Cesar Gracie academy that Bret earned his purple belt and started fighting in professional MMA matches.

He also occasionally trains at the respective academies of Jake Shields (Graciefighter Berkeley), Nick Diaz and Nate Diaz (Graciefighter Lodi), Gilbert Melendez (El Nino Training Center), Jon Santos (Team Santos Jiu Jitsu) and Dave Terrell (Nor Cal Fighting Alliance).

After a two-year layoff, Bret dropped to the 170 pound weight class to fight Jesse Juarez on April 26, 2008, in the Iroquois MMA championships.

Bret made his Strikeforce debut on June 26, 2010 in San Jose California as he fought Vagner Rocha in the prelims.