Jan van Breda Kolff (born December 16, 1951) is an American former college and professional basketball player and college basketball head coach. The son of coaching great Butch van Breda Kolff, V.B.K., as he was referred to, played from 1975 to 1983 for the Denver Nuggets, Kentucky Colonels, and Virginia Squires in the American Basketball Association, and the New York/New Jersey Nets in the National Basketball Association.