Tervel Zamfirov (; born 22 February 2005) is a Bulgarian snowboarder specializing in parallel slalom and parallel giant slalom disciplines.
In January 2025, Zamfirov competed at the 2025 Winter World University Games and won a gold medal in the parallel giant slalom event. In March 2025, he represented Bulgaria at the 2025 Snowboarding World Championships and won a gold medal in the parallel slalom event, defeating Arvid Auner by .40 seconds. He became the first Bulgarian to medal at the FIS Snowboard World Championships.
Zamfirov represented Bulgaria at the 2026 Winter Olympics and won a bronze medal in the parallel giant slalom event, defeating Tim Mastnak in a photo finish. This was the seventh Winter Olympic Games medal for Bulgaria, and the first medal won by the nation in 20 years.
His younger sister Malena, is also an Olympic snowboarder.