Greg Mazzy is an actor who appeared as a medieval guard in the Star Trek: The Next Generation fourth season episode "Qpid". He received no credit for his appearance but is listed on the call sheets of the episode. He filmed his scenes on Tuesday 12 February 1991 on location at Descanso Gardens.
As an actor, Mazzy worked on the video game Noir (1996). He also worked as production assistant on the science fiction thriller Interceptor (1992, with John Prosky, Dennis Madalone, Alan Marcus, Gary T. Pike, and stand-in David Rivolier) and in the crafts department on the television movie Zooman (1995), the thriller Chameleon (1995), the drama Grace of My Heart (1996), the crime drama Mad Dog Time (1996), and the reality tv special The World's Most Incredible Animal Rescues (1996).