Killilea is a surname originating in Ireland. Among those with the name are:
Gayle Killilea Irish socialite
Henry Killilea (1863–1929), American baseball team owner and attorney
Karen Killilea (born 1940), Marie Killilea's daughter with cerebral palsy
Marie Killilea (1913–91), American author and cerebral palsy activist
Mark Killilea, Snr (1896–1970), Irish Fianna Fáil Party politician
Mark Killilea, Jnr (born 1939), Irish Fianna Fáil Party politician
Matthew Killilea (1862-1902), American lawyer and politician.
