Zac Bierk (born September 17, 1976 in Peterborough, Ontario, Canada) is a professional hockey goaltender.
Bierk currently plays for the Phoenix Coyotes. He was drafted by the Tampa Bay Lightning in the 1995 NHL Entry Draft, Ninth Round, Two-hundred twelfth Overall from the Peterborough Petes. He has also played for the Tampa Bay Lightning and Minnesota Wild. He is the brother of former Skid Row frontman Sebastian Bach and Canadian actress Dylan Bierk. Son of the late David Bierk (artist), paintings still displayed at the Nancy Hoffman Gallery in New York.