Mac Nisse

Mac Nisse, an early Irish matronymic meaning "son of Ness", may refer to:

Mac Nisse of Connor, founding saint of Connor, Co. Antrim
Mac Nisse, third abbot of Clonmacnoise
Fergus Mór, a legendary king of the Díal Riata
Domangart Réti, Fergus's son and successor