W11 may refer to:
Aircraft Cierva W.11 Air Horse, a British helicopter Hansa-Brandenburg W.11, a German fighter floatplane Wolf W-11 Boredom Fighter, an American biplane
Automobiles Mercedes-Benz W11, a German roadster Mercedes-AMG F1 W11 EQ Performance, a racing car Nissan Avenir (W11), a station wagon
Other uses British NVC community W11, in the British National Vegetation Classification system Cuboctahedron LB&SCR A1X Class W11 Newport, a steam locomotive London Buses route W11 W11 Opera, a British opera company renamed to London Youth Opera Windows 11, 2021 operating system Winning Eleven, a soccer simulation game W11, a postcode district in London, England World 1-1