Save Type Surname (from given name) Usage Irish, Scottish Expand LinksMeaning & History Anglicized form of Gaelic Mac Néill meaning "son of NIALL". DetailsRelated Names VariantsMacNeil, Mac Néill, Mac Niall, McNeal, McNeill, McNiall, McNiel, Neil, Ó Néill(Irish) MacNeil, Mac Néill, McNeal, McNeill, McNiel, Neil(Scottish) Categories anglicizations Entry updated November 16, 2019 ·