E11

E11, E-11, E.11 or E 11 may refer to:
 * HMS E11, a United Kingdom Royal Navy submarine which saw service during World War I
 * Bombardier E-11A, a United States Air Force aircraft
 * E11, a postcode area in the E postcode area, covering the Leytonstone district in Greater London, England
 * Bogo-Indian Defence, by Encyclopaedia of Chess Openings code
 * E11, an infinite dimensional Kac–Moody algebra
 * E11 screw, a type of Edison screw
 * E11, a visa for the United States, see Alien of extraordinary ability
 * Damansara–Puchong Expressway, Malaysia
 * E 11 road (United Arab Emirates)
 * European route E11, a European E route in France
 * E11 European long distance path, a long-distance hiking path in Europe
 * E11 Expressway in Japan:
 * Tokushima Expressway (between Tokushima JCT and Naruto JCT)
 * Takamatsu Expressway
 * Matsuyama Expressway (between Kawanoe JCT and Matsuyama IC)
 * E11 (album), by Janice Vidal, 2014
 * Citybus Route E11