Zachary "Zak" Bagans is an American paranormal investigator, actor, TV personality, museum operator, producer, director, and author. He is the principal host of the Travel Channel paranormal investigation series Ghost Adventures.

A graduate of the Motion Picture Institute of Michigan, Bagans moved to Las Vegas to become a documentary filmmaker and explorer of the paranormal. In 2004, Bagans teamed up with Nick Groff and Aaron Goodwin to produce a documentary-style film called Ghost Adventures. The film aired on the SciFi Channel in 2007.