William Robert Casey (23 May 1918 – 3 March 1999) was an Irish sportsperson. He played Gaelic football with his local club Dingle and later and was a member of the Kerry senior inter-county team from 1938 until 1949. His nephew Brian Mullins played with Dublin in the 1970s and 1980s winning 4 All Ireland titles. Both his sons , and played with Kerry at all levels.