W11 may refer to: Hansa-Brandenburg W.11, a 1917 fighter seaplane Mercedes-Benz W11, a road car produced by Mercedes-Benz between 1929 and 1934 Mercedes-AMG F1 W11 EQ Performance, a Formula One car produced by Mercedes-Benz to compete in the 2020 Formula One World Championship W11, a postcode district in the W postcode area of London W11 Opera, an opera company based in that district Winning Eleven, a soccer simulation game Worms: Open Warfare, the eleventh game in the Worms series Cierva W.11 Air Horse helicopter Wolf W-11 Boredom Fighter airplane Windows 11, a Microsoft operating system