// Workers AI · dad joke modeWhy did E8 go to therapy? It had 8 times the issues.

E8 may refer to:

Mathematics

• E₈ (mathematics), an exceptional simple Lie group with root lattice of rank 8, or its Lie algebra ${\mathfrak {e}}_{8}$
• E₈ lattice, special lattice in R⁸
• E₈ manifold, mathematical object with no smooth structure or topological triangulation
• E₈ polytope, alternate name for the 4₂₁ semiregular (uniform) polytope
• Elementary abelian group of order 8

Physics

• E₈ Theory, term sometimes loosely used to refer to An Exceptionally Simple Theory of Everything

Transport

• E-8 Joint STARS, a retired USAF command and control aircraft
• EMD E8, 1949 diesel passenger train locomotive
• European route E8, part of the international E-road network, running between Tromsø, Norway and Turku, Finland
• European walking route E8, a walking route from Ireland to Turkey
• HMS E8, 1912 British E class submarine
• London Buses route E8, runs between Ealing Broadway station and Brentford
• Mikoyan-Gurevich Ye-8, 1962 supersonic jet fighter developed in the Soviet Union
• E8, IATA code for the former Alpi Eagles airline
• E8, IATA code for City Airways
• Spyker E8, Spyker Cars model
• Hokuriku Expressway, route E8 in Japan
• East Coast Expressway and Kuala Lumpur–Karak Expressway, route E8 in Malaysia
• E8 Series Shinkansen, a Japanese high-speed train to be introduced in 2024

Other uses

• Empire 8, intercollegiate athletic conference affiliated with the NCAA's Division III
• E-8 (rank), an enlisted rank in the military of the United States
• E8, baseball scorekeeping abbreviation for an error on the center fielder
• E8, postcode district in the London E postcode area

See also

• 8E (disambiguation)