Lannon is a surname. Notable people with that name include:
*
Frances Lannon (born 1945), British historian
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James Patrick Lannon (1878-1953), American admiral
*
Nyles Lannon, American musician
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Ryan Lannon (born 1982), American ice hockey player
*
Timothy R. Lannon (born 1952), American university president
Fictional
*
Alex Lannon, character in ''Dominion''
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