John Peter Petrucci (born July 12, 1967) is an American guitarist, best known as a founding member of the progressive metal band Dream Theater. He produced or co-produced (often with Mike Portnoy before Portnoy's absence from the band 2010-2023) all of Dream Theater's albums from Metropolis Pt. 2: Scenes from a Memory (1999), and has been the sole producer of the band's albums released since A Dramatic Turn of Events (2011).
