William Leon Garrett (April 4, 1929 – August 7, 1974) was a basketball player and coach and a college administrator.
Garrett was born in Shelbyville, Indiana and played basketball at Shelbyville High School. He led Shelbyville to the Indiana state championship in 1947 and was named Indiana Mr. Basketball. He then went to Indiana University, where he played for head coach Branch McCracken. Garrett was the first African-American to play on the IU basketball team and also the first to regularly start on a Big Ten team. He was named an All-American in 1951, his senior season. He was selected by the Boston Celtics in the second round of the NBA draft, becoming the third black player ever drafted by an NBA team.