Paul Gerard Cahill (born 29 September 1955) was an English association football defender during the 1970s and 1980s.
Cahill played in the Football League for Coventry City, Portsmouth, Aldershot, Tranmere Rovers and Stockport County.
In 1978, he signed with the Southern California Lazers of the American Soccer League before moving to the California Surf of the North American Soccer League in 1979.
In 1981, he transferred to the San Jose Earthquakes, ending his career in 1982.