McManamon is a surname. Notable people with the surname include:
Brendan McManamon (born 1982), Irish Gaelic footballer Colm McManamon, Gaelic footballer James Emmett McManamon (1905-1954), American politician Kevin McManamon (born 1986), Irish Gaelic footballer Matt McManamon, English singer-songwriter and guitarist Paul F. McManamon (born 1946), American scientist