John Leslie Pelphrey (born July 18, 1968) is an American college basketball coach; most recently he was the 14th men's basketball head coach at the University of Arkansas (hired April 2007). After being named Kentucky's "Mr. Basketball" in 1987, he became a star college player at the University of Kentucky. Prior to coaching the Razorbacks, he served as head basketball coach for South Alabama. Pelphrey served as an assistant coach under Eddie Sutton at Oklahoma State and Billy Donovan at Marshall and Florida.