Hugh William Osbert Molyneux, 7th Earl of Sefton (22 December 1898 – 13 April 1972) was the last Earl of Sefton. His family seats were Croxteth Hall and Abbeystead House in Lancashire; he also held the Wyresdale Forest, an estate in the Forest of Bowland, and Grosvenor Cottage, a property in Culross Street, Mayfair, London.
His grandfather, William Philip Molyneux, 2nd Earl of Sefton, founded the Waterloo Cup and the Grand National.