William S. Renn Jr. (May 31, 1928 – August 23, 2021) was an American football coach.

[1] He was the 23rd head football coach at The Apprentice School in Newport News, Virginia and he held that position for two seasons, from 1967 until 1968.

[2] Renn died from Alzheimer's disease on August 23, 2021, at the age of 93.

[3] # denotes interim head coach

This biographical article relating to a college football coach first appointed in the 1960s is a stub.