The 1920 Londonderry County Council election was held on Thursday, 3 June 1920.
The Dungiven Electoral Area comprised the District Electoral Divisions of Ardmore, Ballykelly, Ballymullins, Banagher, Bondsglen, Claudy, Drum, Dungiven, Eglinton, Faughanvale, Fenny, Foreglen, Glendermott, Glenshane, Lough Enagh, Lower Liberties, Myroe, Owenreagh, Straw, Tamnaherin, The Highlands, Upper Liberties, and Waterside.