Pat's King of Steaks (also known as Pat's Steaks) is a Philadelphia restaurant specializing in cheesesteaks, and located at the intersection of South 9th Street, Wharton Street and East Passyunk Avenue in South Philadelphia, directly across the street from rival Geno's Steaks. It was founded in 1930 by brothers, Pat and Harry Olivieri, who are credited with the creation of the Philly cheesesteak.