Michael Duffy

Michael Duffy may refer to:


 * Michael Duffy (Australian journalist), Australian crime novelist
 * Michael Duffy (Australian politician) (born 1938), Australian politician
 * Michael Duffy (Irish politician) ({{fl.|1922–1936), 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