Randal MacDonnell or McDonnell may refer to:
Randal MacSorley MacDonnell (), 1st Earl of Antrim, son of Sorley Boy MacDonnell Randal MacSorley MacDonnell (1609–1683), Marquess of Antrim, 2nd Earl of Antrim, and son of the 1st Earl of Antrim Randal MacDonnell (1680–1721), 4th Earl of Antrim and nephew of the Marquess of Antrim Randal William MacDonnell (1749–1791), Marquess of Antrim, 5th and 1st Earl of Antrim, and son of the 4th Earl of Antrim Randal John Somerled McDonnell (1911–1977), 8th Earl of Antrim, diplomat, activist, soldier, administrator from Northern Ireland, and great-great grandson of the 5th and 1st Earl of Antrim Randal Alexander McDonnell, 10th Earl of Antrim (), Scottish landowner and grandson of the 8th Earl of Antrim