Doyle Kenneth Parrack (December 6, 1921 – September 5, 2008) was an American professional basketball player and coach. Parrack was born in Cotton County, Oklahoma, and played basketball at Connors Jr. College and Oklahoma A&M University, where the Aggies under coach Henry Iba won an NCAA Championship in 1945. He coached at Shawnee (OK) High School for one year and compiled a 15–12 record. He then returned to the court and played one season of professional basketball for the Chicago Stags of the NBA. Parrack was hired as coach at Oklahoma City University in 1947 and transformed the program from a club team without a campus gymnasium into a national powerhouse. He eventually led the Chiefs to four consecutive NCAA tournament appearances.