E3 was a video game industry event held in Los Angeles, US. E3, E.III, E03, E-3, E₃ or E³ may also refer to:

Arts and entertainment

* E₃, the third octave of the musical note E * ''E3'' (album), 2023 album by Midwxst * '' Every Extend Extra'', a video game

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-weathe ...

, 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, a German aircraft * Siemens-Schuckert E.III, a German aircraft * E-3 (rank), a paygrade in the US military

Organizations

EU three The EU three, also known as the EU big three, EU triumvirate, EU trio or simply E3, refers to France, Germany, and Italy; the three large founding members of the European Union (EU). These countries are generally regarded as the three most politi ...

–Germany, France, and Italy–, the three EU member countries with the largest populations and economies * Economics for Equity and the Environment Network, a nonprofit organization based in Portland, Oregon, US * e3 Filing, a Regulatory Filing department within

Computershare Computershare Limited is an Australian stock transfer company that provides corporate trust, stock transfer, and employee share plan services in many countries. The company currently has offices in 20 countries, including Australia, the U ...

Places

* E3, a postcode district in the

E postcode area The E (Eastern) postcode area, also known as the London E postcode area, is the part of the London post town covering much of east London, England. It borders the N postcode area to the west, both north of the tidal Thames. Since closure of the ...

for east London, England * Wauwilermoos pile dwelling settlement (Egolzwil 3), a prehistoric settlement in Switzerland

Science and technology

Science

* E3 binding protein, a metabolic protein *

Estriol Estriol (E3), also spelled oestriol, is a steroid, a weak estrogen, and a minor female sex hormone. It is one of three major endogenous estrogens, the others being estradiol and estrone. Levels of estriol in women who are not pregnant are almost ...

(E3), an estrogen sex hormone *

E3 Ubiquitin ligase A ubiquitin ligase (also called an E3 ubiquitin ligase) is a protein that recruits an E2 ubiquitin-conjugating enzyme that has been loaded with ubiquitin, recognizes a protein substrate, and assists or directly catalyzes the transfer of ubiquitin ...

, a protein component of proteasome-mediated protein degradation * Dihydrolipoamide dehydrogenase, the third element of the pyruvate dehydrogenase complex * C/2022 E3 (ZTF), a comet * Haplogroup E3 (Y-DNA), a human Y-chromosome DNA haplogroup

Technology

* E-3 process, an obsolete film developing method for photographic transparency film * E3 series (number series), for electronic components * 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 ...

ASIMO predecessor robot * Olympus E-3, a digital SLR camera * E3, a communications channel defined in the

E-carrier The E-carrier is a member of the series of carrier systems developed for digital transmission of many simultaneous telephone calls by time-division multiplexing. The European Conference of Postal and Telecommunications Administrations (CEPT) ori ...

standard

Transportation

Road

E03 expressway (Sri Lanka) The Colombo–Katunayake Expressway is Sri Lanka's second E Class highway. The highway links the Sri Lankan capital Colombo with Bandaranaike International Airport, Katunayake and Negombo. Construction on the highway began in October 2009, and ...

, Colombo–Katunayake Expressway in Sri Lanka *

Second Link Expressway The Second Link Expressway is a controlled-access highway in Johor, Malaysia. It runs from Senai, Kulai District near the Senai International Airport, international airport to the Malaysia–Singapore Second Link at Tanjung Kupang, Johor Bahru ...

(route E3), in Johor, Malaysia * Manila–Cavite Expressway (route E3), in Philippines * Kyushu Expressway, numbered as E3 in Japan * European route E3, a European route * London Buses route E3, a bus route in London * E3, a

Mazda E engine The iron-block, alloy head E family was an evolution of Mazda's xC design. It was released in June 1980 with the introduction of the first front-wheel drive Mazda Familias and Ford Lasers. Some later variants of the E5-powered Mazda Familia and ...

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

, a German automobile * Chery E3, a Chinese saloon

Rail

E3 Series Shinkansen The is a Japanese Shinkansen high-speed train type built for ''Komachi (train), Komachi'' services which commenced on 3 June 1997, coinciding with the opening of the new Akita Shinkansen "mini-shinkansen" line, a regular Narrow-gauge railway, ...

, a Japanese high-speed train * EMC E3, a diesel locomotive * LB&SCR E3 class, an 1894 British class of steam locomotives

Air

* New Gen Airways (former IATA code: E3), a former Thai airline * EGO Airways (former IATA code: E3), a former Italian airline

Other

E3 European long distance path The E3 European long distance path, or just E3 path, is a long-distance footpath that is planned to run from the Portuguese coast to the Black Sea in Bulgaria. It is one of the network of European long-distance paths. Route The completed sect ...

, a footpath

Other uses

* E-3 visa, a non-migrant visa allowing Australian citizens to live and work in the US * 1. e3, 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 ...

in chess *

E3 Harelbeke E3 Saxo Bank Classic, previously known as E3 BinckBank Classic, E3 Harelbeke, Harelbeke–Antwerp–Harelbeke and E3-Prijs Vlaanderen, is an annual road cycling race in Flanders, Belgium. The race starts and finishes in Harelbeke, covering 203 ki ...

, a road cycling race in Flanders, Belgium