Michael Callahan may refer to:
Michael Callahan (basketball) (fl. 1984–2000), Australian wheelchair basketball player and businessman Michael Callahan (ice hockey) (born 1999), American ice hockey player Michael Callahan (rowing) (fl. 1992–2013), collegiate rowing coach Michael Callahan (soccer) (born 1987), American soccer player Michael J. Callahan (lawyer) (fl. 1995–2014), American lawyer and corporate executive Michael J. Callahan (New York politician) (1858–1902), American saloonkeeper and politician Sean Michael Callahan (born 1975), retired American soccer player Michael Shane Callahan, American actor Mike Callahan, fictional character in the Callahan's Crosstime Saloon short stories by Spider Robinson
See also Michael Callaghan (disambiguation)