William Molesworth may refer to:
Sir William Molesworth, 6th Baronet (1758–1798), MP for Cornwall 1784–90 Sir William Molesworth, 8th Baronet (1810–1855), British politician William Molesworth (British Army officer) (1894–1955), World War I flying ace William Nassau Molesworth (1816–1890), English clergyman and historian
See also Molesworth (disambiguation)