Michael Duffy may refer to:
Michael Duffy (Australian journalist), Australian crime novelist Michael Duffy (Australian politician) (born 1938), Australian politician Michael Duffy (Irish politician) (–1936), Irish politician and trade unionist Michael Duffy (historian), British historian Mike Duffy (born 1946), Canadian journalist and senator Michael Duffy (American journalist), American journalist and assistant managing editor for Time magazine Michael Duffy (footballer) (born 1994), Northern Irish footballer Michael Duffy (Queensland politician) (1850–1926), member of the Queensland Legislative Assembly Michael Duffy (equestrian), Irish showjumper
See also Mike Duffey (born 1977), American politician