Michael Callahan
Michael Callahan may refer to:
- Michael Callahan (basketball), Australian wheelchair basketball player and businessman
- Michael Callahan (ice hockey), American ice hockey player
- Michael Callahan (rowing), collegiate rowing coach
- Michael Callahan (soccer), American soccer player
- Michael J. Callahan (lawyer), American lawyer and corporate executive
- Michael J. Callahan (New York politician), American saloonkeeper and politician
- Sean Michael Callahan, retired American soccer player
- Michael Shane Callahan, American actor
- Mike Callahan, fictional character in the Callahan's Crosstime Saloon short stories by Spider Robinson