Anthony John McQuillan (born 19 March 1951 in Greenslopes, Queensland) is a former Australian Test cricket umpire from Queensland. He umpired one Test match in 1993 between Australia and New Zealand at Perth on 12 November to 16 November 1993, a match drawn through Australia's "unaccountable dithering". McQuillan's partner was Darrell Hair. McQuillan umpired 14 One Day International (ODI) matches between 1993 and 1999. Altogether, he umpired 54 first-class matches between 1989 and 2001.