John Richard "Jack" Leasure (born January 29, 1986) is an American former professional basketball player who spent the majority of his career playing in the New Zealand National Basketball League for the Taranaki Mountainairs.
He is best known for his collegiate career at Coastal Carolina University in which he was named the 2006 Big South Conference Player of the Year and finished with 411 made three-point field goals, which was the fifth-highest NCAA Division I total at the time of his graduation in 2008.
He is currently the head basketball coach at McQuaid Jesuit High School in Rochester, New York.