William McCauley Humphries (born 8 June 1936), known as Billy Humphries, was a Northern Irish footballer who played as a winger. He played in the Irish League with Glentoran and Ards, and in England with Leeds United, Coventry City and Swansea Town in the 1950s, 1960s and 1970s. He won 14 international cap for Northern Ireland. He also won three amateur caps for Northern Ireland and twelves caps for the Irish League representative team.