Nicholas "Nick" Groff (born April 19, 1980) is an American paranormal investigator, producer, musician, and TV personality. He was a co-investigator, executive producer, editor and cameraman on Ghost Adventures from seasons 1–10; he was the lead investigator for all 4 seasons of Destination America's reality series Paranormal Lockdown.

Raised in New England, he's been fascinated with the paranormal since childhood, because of his passion for horror movies and some inexplicable experiences within his home and family. His strong vivacity led him to risk his own life twice within one year, he considers the first and gravest time a near-death experience that made him more sensitive to the supernatural.