E6

E6, E06, E.VI or E-6 may refer to:

Science and technology

 * E6 series (number series), of preferred numbers for electronic components
 * E6 (mathematics), a Lie group in mathematics
 * E6 polytope, in geometry
 * Thyroiditis (ICD-10 code: E06)
 * E-6 process, a common photographic process for developing transparency film
 * E6 protein, a protein encoded by Human papillomavirus
 * Honda E6, one of the predecessors of Honda's ASIMO robot
 * Motorola ROKR E6, a 2006 multimedia phone model
 * Nokia E6, a smartphone

Rail

 * EMD E6, a diesel locomotive
 * LNER Class E6, a class of British steam locomotives
 * PRR E6, an American steam locomotive
 * LB&SCR E6 class, a British steam locomotive
 * E6 Series Shinkansen, a Japanese high-speed train

Road

 * European route E6, a European highway route
 * London Buses route E6, a Transport for London contracted bus route
 * North–South Expressway Central Link, route E6 in Malaysia
 * NAIA Expressway, route E6 in the Philippines
 * Jōban Expressway, Sendai-Tōbu Road, Sanriku Expressway (between Sendaiko-kita IC and Rifu JCT) and Sendai-Hokubu Road, the E6 expressway in Japan
 * BYD e6, an electric car by BYD Auto

Aviation

 * Eurowings Europe (IATA code: E6), a Maltese airline subsidiary of Lufthansa
 * E-6 Mercury, a US Navy derivative of the Boeing 707
 * Eggenfellner E6, an American aircraft engine design
 * Pfalz E.VI, a World War I German aircraft

Other transport

 * E6 European long distance path, a long-distance hiking trail

Music

 * Electric Six, a Detroit rock band
 * E6, the first note of the whistle register
 * "E6", a song by Norwegian band D.D.E. The song title is a reference to the European route E6.
 * Elephant 6, a collective of independent American musicians
 * E6, the first note of Runaway (Kanye West song)

Other uses

 * E6, a London postcode district in the E postcode area
 * E6, an error by the Shortstop in baseball
 * E-6 (rank), the sixth rank of enlisted soldier in the US armed services
 * E6 grade, of difficulty in rock climbing
 * E6 (short for Epic 6), a variant of Dungeons & Dragons v3.5