E4, E.IV or E-4 may refer to:

Entertainment

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Transportation

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Roads

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Trains

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  • E4 Series Shinkansen, a Japanese high-speed train
  • CNW Class E-4, a 4-6-4 steam locomotive of the Chicago & Northwestern Railway
  • EMC E4, a diesel locomotive
  • LB&SCR E4 class, a steam locomotive of the London, Brighton & South Coast Railway
  • LNER E4 Class, a 2-4-0 steam locomotive built by the Great Eastern Railway and operated by the LNER

Military

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  • Boeing E-4, a U.S. military flying command post
  • Fokker E.IV, a 1915 German fighter aircraft
  • E4, the fourth enlisted rank in the Military of the United States, including:
    • Petty officer third class in the United States Navy and United States Coast Guard
    • Senior airman in the United States Air Force (Sergeant until 1976)
    • Specialist (rank) in the United States Army (if the soldier is not a non-commissioned officer)
    • Corporal in the United States Army and United States Marine Corps (if the soldier is a non-commissioned officer)

Science and technology

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  • E4-isoprostane, a type of isoprostane
  • Leukotriene E4, a naturally produced eicosanoid lipid mediator
  • E-4 process, an obsolete development process associated with photographic transparency film
  • Honda E4, a predecessor of Honda's ASIMO robot
  • RCS-4, a synthetic cannabinoid sold as "E-4"
  • E4 or E4, an old name for the exceptional group F4
  • Estetrol, an estrogen

Other uses

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See also

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