Charles Duffy

Charles Duffy may refer to:

• Charles Cashel Gavan Duffy (1855–1932), Australian public servant
• Charles Gavan Duffy (Australian politician) (1816–1903), Irish nationalist, journalist, poet and Australian politician
• Charles Gavan Duffy (Canadian politician) (1874–1958), Canadian politician
• Charles John Duffy (1919–1941), U.S. Navy officer
• Charles Lee Duffy (born 1976), American serial killer
• Charles Leonard Gavan Duffy (1882–1961), Australian judge