Pat Duffy is a professional skateboarder from Corte Madera,California. He is featured in the video games Skate, Skate 2, and Skate 3.

Duffy is best known as the man to have revolutionized rail grinding, for his legendary part in Plan B's 1992 video "Questionable," and for his part in Plan B's 1993 video, "Virtual Reality" Duffy was featured on an episode of the MTV series Scarred.