Jon Anthony Korfas (alternate spelling: John, Greek: Τζον Κόρφας; born August 21, 1962) is a Greek-American former professional basketball player and coach.

During his professional playing career, Korfas won all three of the FIBA Europe continental-wide titles on the club level.

With Panathinaikos Athens, he won the top-tier level FIBA EuroLeague championship, during the 1995–96 season.

During his playing days, Korfas became well known in Europe, due to his very unusual one-handed jump shot.

They advanced to the California Interscholastic Federation (CIF)'s 1981 Finals, where they were defeated by Long Beach Poly, by a score of 65–63.

After high school, Korfas played college basketball in the United States, at USC and at Pepperdine University.

[5] While at Pepperdine, Korfas won the West Coast Athletic Conference championship in the years 1985 and 1986.

Korfas was born in Akron, Ohio, USA, to a Greek father and an American mother.

Stef was an NCAA Division II men's college basketball player at Clayton State University.