E1, E01, E.I or E-1 may refer to:

Transportation

Aircraft

* Azcárate E-1, a Mexican sesquiplane trainer *

Fokker E.I The Fokker E.I was the first fighter aircraft to enter service with the Luftstreitkräfte, Fliegertruppe of the German Army (German Empire), Deutsches Heer in World War I. Its arrival at the front in mid-1915 marked the start of a period known as ...

, a German fighter aircraft * Grumman E-1 Tracer, an American airborne early warning aircraft * Hydra Technologies E1 Gavilán, a hand-launched Mexican unmanned electronic surveillance drone *

Junkers E.I The Junkers J 1, nicknamed the ''Blechesel'' ("Tin Donkey" or "Sheet Metal Donkey"), was an experimental monoplane aircraft developed by Junkers & Co. It was the world's first all-metal aircraft. Manufactured early on in the First World War, ...

, the Idflieg designation for the 1916 Junkers J1 monoplane *

LVG E.I The LVG E.I was a German two-seat monoplane of World War I. The E.I was unusual among monoplanes of its time in that it featured ailerons as opposed to the then-conventional (for monoplanes) wing warping. It was fitted with both a rearward firing ...

, a 1915 German two-seat monoplane *

NFW E.I The NFW E.I was a prototype fighter aircraft built in Germany during World War I. Design The E.I was an all-wood single-seat monoplane powered by an Oberursel U.0 Oberursel (Taunus) () is a town in Germany and part of the Frankfurt Rhein-Ma ...

, a 1917 German monoplane fighter *

Pfalz E.I The Morane-Saulnier H was an early aircraft first flown in France in the months immediately preceding the First World War; it was a single-seat derivative of the successful Morane-Saulnier G with a slightly reduced wingspanTaylor 1989, p.648"The ...

, a Morane-Saulnier H monoplane built under licence for Germany *

Siemens-Schuckert E.I __NOTOC__ The Siemens-Schuckert E.I was a German fighter aircraft, manufactured by Siemens-Schuckert. The E type (Eindecker) monoplane first flew in late 1915. it was a monoplane with wire braced wings. powered by the Siemens-Halske Sh.I rotary ...

, a 1915 German single seat monoplane *

Standard E-1 The Standard E-1 was an early American Army fighter aircraft, tested in 1917. It was the only pursuit aircraft manufactured by the United States during World War I.

, a 1917 early American Army fighter aircraft

Automobiles

BMW E1 BMW E1 is the name of two electric/hybrid city car concepts by German automobile manufacturer BMW, revealed at the 1991 then 1993 International Motor Show Germany. First generation (Z11; 1991) The first-generation BMW E1 prototype, the Z11, ...

, a 1991 and 1993 German electric/hybrid city car concept *

BYD e1 The BYD F0, formerly known as BYD F1, is a city car produced by the Chinese manufacturer BYD. It was introduced in July 2008 and was produced up to 2015. Although petrol versions ended, a subsequent electric version, branded under the new "e ser ...

, a 2019–present Chinese electric city car * Dongfeng Fengguang E1, a 2019–present Chinese electric mini crossover *

Haima E1 The Haima 1 or Haima Aishang (Chinese: 海马爱尚) is a city car produced by Haima positioned below the Haima 2 subcompact. Overview Originally marketed as the Haima M11 when revealed as a concept car in 2010. Initial styling of the Hai ...

, a 2020–present Chinese electric city car *

Roewe Roewe is a vehicle marque created by the Chinese automaker SAIC Motor in 2006, focuses in luxury cars. Roewe vehicles were initially based on technology acquired from defunct British carmaker MG Rover. SAIC was unable to purchase the rights t ...

, a 2012 Chinese electric city car concept * E1, a Mazda E type piston engine

Submarines

* HMS ''E1'', an E-class submarine of the Royal Navy * USS ''E-1'' (SS-24), a 1917 E-class submarine of the United States Navy

Roads

* E01, Southern Expressway in Sri Lanka * European route E01, from Northern Ireland to Spain *

E1 European long distance path The E1 European long-distance path, or just E1 path, is one of the European long-distance paths designated by the European Ramblers' Association. It has a total length of some . It begins in Norway at Nordkapp, and crosses the Kattegat between ...

, a long-distance hiking route from Norway to Italy * London Buses route E1, a transport for London contracted bus route * Tomei Expressway and

Meishin Expressway The , or Nagoya-Kōbe Expressway is a toll expressway in Japan. It runs from a junction with the Tōmei Expressway in Komaki, Aichi (outside Nagoya) west to Nishinomiya, Hyōgo (between Osaka and Kobe). It is the main road link between Osaka and ...

, route E1 in Japan * North–South Expressway Northern Route and New Klang Valley Expressway, route E1 in Malaysia * E1 expressway (Philippines) ( North Luzon Expressway, Subic–Clark–Tarlac Expressway, and Tarlac–Pangasinan–La Union Expressway), expressway route in the Philippines * E1 expressway (Pakistan)

Trains and locomotives

E1 Series Shinkansen The was a high-speed Shinkansen train type operated by East Japan Railway Company (JR East) in Japan from July 1994 until September 2012. They were the first double-deck trains built for Japan's Shinkansen. They were generally, along with thei ...

, a Japanese high-speed train *

Bavarian E I The Bavarian Class E I steam locomotives operated by the Royal Bavarian State Railways encompassed four different variants of saturated steam, goods train locomotive with a 2-8-0 wheel arrangement. Standard variant, older type The first series ...

, a German steam engines locomotive model * EMC E1, a diesel locomotive *

LB&SCR E1 class The London, Brighton and South Coast Railway E1 Class were steam locomotives A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combus ...

, an 1874 British 0-6-0 steam locomotive *

NCC Class E1 NCC may refer to: Biology *Neural correlates of consciousness, neuronal events and mechanisms relating to perception phenomena *Sodium-chloride symporter, abbreviated as NCC Companies *National Certification Corporation, a nursing specialty cer ...

, a Northern Counties Committee Irish steam locomotive *

NER Class E1 The North Eastern Railway Class E1, classified as Class J72 by the London and North Eastern Railway (LNER), is a class of small 0-6-0T steam locomotives designed by Wilson Worsdell for shunting. They had inside cylinders and Stephenson va ...

, an 1898 class of small 0-6-0T steam locomotive * PRR E1, an American PRR 4-4-2 steam locomotive * SP&S Class E-1, a 1934 steam locomotives class

Science and mathematics

Biochemistry

* E1 (HCV), a viral structural protein found in hepatitis C * E1, a unimolecular elimination mechanism in organic chemistry * E1-enzymes, also known as Ubiquitin-activating enzymes, an enzyme which catalyzes the first step in the ubiquitination reaction, which targets a protein for degradation via a proteasome] *

E1 regulatory sequence Transcription of insulin is regulated by the binding of various transcription factors to the ~400 base pairs before the insulin transcription start site, called the "insulin regulatory sequence". This sequence is made up of several distinct regions ...

for the insulin gene * Estrone, a hormone * Pyruvate dehydrogenase (E1), the first component enzyme of pyruvate dehydrogenase complex * Acireductone synthase, an enzyme *

Haplogroup E1 (Y-DNA) In human genetics, Haplogroup E-P147 is a human Y-chromosome DNA haplogroup. Haplogroup E-P147, along with the less common Haplogroup E-M75 (Y-DNA), Haplogroup E-M75, is one of the two main branches of the older Haplogroup E (Y-DNA), Haplogroup E- ...

, a human Y-chromosome DNA haplogroup

Mathematics

* Exponential integral,

E_1(z)= \int_1^\infty \frac\, t~

, mathematical function * the E1 series (number series) of preferred numbers

Medicine

* E1-isoprostane, a type of isoprostane

Businesses and organizations

* E1 Music, an independent record label in the United States * E1 Corp., a Korean chemical and oil company, member of the LS Group *

Entertainment One Entertainment One Ltd., trading as eOne, is an American-owned Canadian multinational entertainment company. Based in Toronto, Ontario, the company is primarily involved in the acquisition, distribution, and production of films and television se ...

, an international media company

Electronics

Honda E1 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 kno ...

, a predecessor of the ASIMO humanoid robot * Olympus E-1, a digital single-lens reflex camera

Places

E1 (Jerusalem) E1 (short for ''East 1'') ( he, מְבַשֶּׂרֶת אֲדֻמִּים, Mevaseret Adumim, Herald of Adumim) – also called the E1 area, E1 zone or E1 corridor – is an area of the West Bank within the municipal boundary of the Israeli settle ...

, an area east of Jerusalem in the West Bank *

E1 postcode district 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 ...

, London, England, United Kingdom

Other uses

* E01, ECO code for the closed variation of the Catalan Opening in chess * E01, the Encase Image File Format *

E-1 (rank) Pay grades are used by the eight uniformed services of the United States (Army, Marine Corps, Navy, Air Force, Space Force, Coast Guard, Public Health Service Commissioned Corps, and NOAA Commissioned Officer Corps) to determine wages and benef ...

, the pay grade for enlisted ranks of Private, Airman Basic, and Seaman Recruit in the United States Military *

E1 grade In rock climbing, mountaineering, and other climbing disciplines, climbers give a grade to a climbing route or boulder problem, intended to describe concisely the difficulty and danger of climbing it. Different types of climbing (such as spo ...

, a difficulty level in rock climbing *

E-1 (rocket engine) Rocketdyne's E-1 was a liquid propellant rocket engine originally built as a backup design for the Titan I missile. While it was being developed, Heinz-Hermann Koelle at the Army Ballistic Missile Agency (ABMA) selected it as the primary engine for ...

, a liquid propellant rocket engine * E1 carrier, an E-carrier European telecommunications standard * E1, an AMD CPU from the Bobcat (microarchitecture) family