Charles Duffy may refer to:
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Charles Cashel Gavan Duffy (1855–1932), Australian public servant
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Charles Gavan Duffy (Australian politician)
Sir Charles Gavan Duffy, KCMG, PC (12 April 1816 – 9 February 1903), was an Irish poet and journalist (editor of ''The Nation''), Young Irelander and tenant-rights activist. After emigrating to Australia in 1856 he entered the politics of ...
(1816–1903), Irish nationalist, journalist, poet and Australian politician
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Charles Gavan Duffy (Canadian politician) (1874–1958), Canadian politician
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Charles John Duffy (1919–1941), U.S. Navy officer
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Charles Lee Duffy (born 1976), American serial killer
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Charles Leonard Gavan Duffy (1882–1961), Australian judge
{{hndis, Duffy, Charles