W11

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, an operating system
 * Winning Eleven, a soccer simulation game
 * W11, a postcode district in London, England