E3 (Electronic Entertainment Expo) is a major annual showcase where video game developers from all over the world reveal their plans for the year. E3, E.III, E03, E-3 or E³ may also refer to:

Military

Boeing E-3 Sentry The Boeing E-3 Sentry is an American airborne early warning and control (AEW&C) aircraft developed by Boeing. E-3s are commonly known as AWACS (Airborne Warning and Control System). Derived from the Boeing 707 airliner, it provides all-wea ...

, an AWACS aircraft based on the Boeing 707 * Fokker E.III, a 1915 Dutch fighter aircraft * HMS E3, an E-class submarine of the British Royal Navy *

Pfalz E.III The Morane-Saulnier L, or Morane-Saulnier Type L, or officially MoS-3, was a French parasol wing one or two-seat scout aeroplane of the First World War. The Type L became one of the first successful fighter aircraft when it was fitted with a si ...

, a German aircraft * Siemens-Schuckert E.III, a German aircraft *

E-3 (rank) Pay grades are used by the eight uniformed services of the United States (United States Army, Army, United States Marine Corps, Marine Corps, United States Navy, Navy, United States Air Force, Air Force, United States Space Force, Space Force, ...

, a paygrade in the United States military

Organizations

* EU three, Germany, France, and Italy, the three nations with the largest populations and economies within the European Union * Economics for Equity and the Environment Network, a nonprofit organization based in Portland, Oregon, U.S. * e3 Filing, a Regulatory Filing department within Computershare

Places

* E3, a postcode district in the E postcode area for east London * E3, archaeological term used for

Wauwilermoos pile dwelling settlement (Egolzwil 3) Wauwilermoos or Egolzwil 3 is one of the 111 serial sites of the UNESCO World Heritage Site ''Prehistoric pile dwellings around the Alps'', of which are 56 located in Switzerland. Geography The site is located on the former Wauwilersee lakeshore ...

Science and technology

* E-3 process, an obsolete film developing method for photographic transparency film * the E3 series (number series) of preferred numbers * Honda E3, a 1991

Honda E series The E series was a collection of successive humanoid robots created by the Honda Motor Company between the years of 1986 and 1993. These robots were only experimental, but later evolved into the Honda P series, with Honda eventually amassing the k ...

ASIMO predecessor robot *

Olympus E-3 The Olympus E-3 was until 2010 Olympus Corporation's flagship camera, positioned as a professional DSLR camera. It is the successor to the Olympus E-1, which was launched in November 2003. The E-3, originally codenamed Olympus E-P1, was announce ...

, a digital SLR camera * E3, a communications channel defined in the E-carrier standard *

E3 binding protein E3 binding protein also known as pyruvate dehydrogenase protein X component, mitochondrial is a protein that in humans is encoded by the ''PDHX'' gene. The E3 binding protein is a component of the pyruvate dehydrogenase complex found only in euka ...

, a metabolic protein * Estriol (E3), an estrogen sex hormone * E3 Ubiquitin ligase, a protein component of proteasome-mediated protein degradation * Dihydrolipoamide dehydrogenase, the third element of the pyruvate dehydrogenase complex

Transportation

* E03 expressway (Sri Lanka), Colombo–Katunayake Expressway in Sri Lanka *

E3 expressway (Pakistan) E3 (short for Electronic Entertainment Expo or Electronic Entertainment Experience in 2021) is a trade event for the video game industry. The Entertainment Software Association (ESA) organizes and presents E3, which many developers, publisher ...

, one of the National Highways of Pakistan * Second Link Expressway, route E3 in Johor, Malaysia * Manila–Cavite Expressway, route E3 in Philippines. *

Kyushu Expressway ( Asian Highway Network ) is one of the Expressways of Japan from Kitakyūshū (and the bridge to Honshū) to west of Kagoshima linking with the Higashikyushu Expressway and the Ibusuki Skyline. It runs through the prefectures of Fukuoka Pref ...

, route E3 in Japan. * E3 Series Shinkansen, a Japanese high-speed train * EMC E3, a diesel locomotive * European route E03, a European route *

LB&SCR E3 class The London, Brighton and South Coast Railway E3 class were 0-6-2T side tank steam locomotives. One prototype was designed by William Stroudley shortly before his death, but was completed by R. J. Billinton, who later built sixteen further loco ...

, an 1894 British class of steam locomotives * London Buses route E3, a bus route in London * Mazda E engine#E3, an evolution of Mazda's xC design *

BMW E3 The BMW New Six (also known as the BMW E3) is a line of mid-size luxury sedans and grand tourer coupés produced by the German automaker BMW from 1968 to 1977. All models used the then-new M30 straight-6 engine. It marked BMW's return to the fu ...

, a German automobile * IATA code for New Gen Airways * E3 European long distance path

Other uses

* Haplogroup E3 (Y-DNA), a human Y-chromosome DNA haplogroup *

E-3 visa The E-3 visa is a United States visa for which only citizens of Australia are eligible. It was created by an Act of the United States Congress as a result of the Australia–United States Free Trade Agreement (AUSFTA), although it is not formall ...

, a non-migrant visa allowing Australian citizens to live and work in the United States * 1. e3 is White's first move in the

Van 't Kruijs Opening The Van 't Kruijs Opening () is a chess opening defined by the move: :1. e3 It is named after the Dutch player Maarten van 't Kruijs (1813–1885) who won the sixth Dutch championship in 1878. As this opening move is rarely played, it is ...