Mehaffy is a surname. Notable people with the surname include: Bert Mehaffy (1895–1970), Irish footballer Michael Mehaffy (born 1955), American urbanist and architectural theorist Pat Mehaffy (1904–1981), judge of the United States Court of Appeals for the Eighth Circuit Tom M. Mehaffy (1859–1944), justice of the Arkansas Supreme Court
See also Clan Macfie, Scottish clan of which Mehaffy is a sept Tom Mehaffie (born 1971), American politician Mehaffey, a surname