Michael Duffy
Michael Duffy may refer to:
- Michael Duffy (Australian journalist), Australian crime novelist
- Michael Duffy (Australian politician), Australian politician
- Michael Duffy (Irish politician), Irish politician and trade unionist
- Michael Duffy (historian), British historian
- Mike Duffy, Canadian journalist and senator
- Michael Duffy (American journalist), American journalist and assistant managing editor for Time magazine
- Michael Duffy (footballer), Northern Irish footballer
- Michael Duffy (Queensland politician), member of the Queensland Legislative Assembly
- Michael Duffy (equestrian), Irish showjumper