:Michael Callahan

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 (fl. 1995–2014), former Yahoo 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