Sir William Evans Morres, 1st Baronet (1710–11 October 1774) was an Anglo-Irish politician. Morres was the son of Francis Morris, of Castle Morres, County Kilkenny, by Catherine Evans, daughter of Sir William Evans, 1st Baronet. His younger brother was Hervey Morres, who was raised to the Peerage of Ireland as Baron Mountmorres in 1765.