John William Rennicke (August 11, 1929 – December 9, 2007) was an American professional basketball player.
He grew up in Aurora, Illinois, and played basketball for East Aurora High School, where he was later inducted into the Athletic Hall of Fame.
After a successful collegiate career with Drake, Rennicke was selected in the sixth round 1951 NBA Draft by the Tri-Cities Blackhawks.
He played for the Milwaukee Hawks in only six games during the second half of the 1951–52 season. He also played for the Elmira Colonels in the American Basketball League in 1951–52 before retiring from professional basketball. Rennicke also played minor league baseball in the Chicago Cubs organization.
Rennicke died in Minnesota in 2007.