- Source: Killilea
Killilea is a surname originating in Ireland. Notable people with the surname include:
Henry Killilea (1863–1929), American baseball team owner and attorney
Karen Killilea (1940-2020), Marie Killilea's daughter with cerebral palsy
Marie Killilea (1913–91), American author and cerebral palsy activist
Mark Killilea Snr (1896–1970), Irish politician
Mark Killilea Jnr (1939-2018), Irish politician
Matthew Killilea (1862–1902), American lawyer and politician