William Loftus Coffey (born 7 October 1885) was an Irish cricketer. He made his debut for Ireland in a match against a team representing New York City in September 1909. Later that month, he played his second and final match for Ireland, playing a first-class match against Philadelphia, which was his only first-class match.
Coffey immigrated to the United States in 1909 and became a U.S. citizen in 1919.