Ullswater is a lake in England.
Ullswater may also refer to:
People James William Lowther, 1st Viscount Ullswater (1855–1949), British Conservative politician Nicholas Lowther, 2nd Viscount Ullswater (born 1942), British hereditary peer
Other uses Ullswater, Ontario, Canada Ullswater Aerodrome, aerodrome in Canada Ullswater Community College, college in England Ullswater 'Steamers', boat company Ullswater Way, walking route in England Viscount Ullswater, title