Leu may refer to:

Businesses and organisations

* LEU, NYSE American stock symbol for Centrus Energy Corp. *

London Ecology Unit The London Ecology Unit (LEU) provided advice to London boroughs on nature conservation issues between 1986 and 2000. It published a series of handbooks, some on specific conservation issues, and some which gave detailed descriptions of Sites of Imp ...

, a former body (1986-2000) which advised London boroughs on environmental matters * Free and Equal (''LeU - Liberi e Uguali''), a political alliance in Italy

Heraldry

* ''Leu'', archaic term for

Wolves in heraldry The wolf has been widely used in many forms in heraldry during the Middle Ages. Though commonly reviled as a livestock predator and man-eater, the wolf was also considered a noble and courageous animal, and frequently appeared on the arms and c ...

Money

Moldovan leu The leu (, plural lei ; Currency symbol, sign: L; ISO 4217 code: MDL) is the currency of Moldova. Like the Romanian leu, the Moldovan leu is subdivided into 100 bani ( ban). The name of the currency originates from a Romanian word which means "li ...

, monetary unit of Moldova *

Romanian leu The Romanian leu (, plural lei ; ISO code: RON; numeric code: 946) is the currency of Romania. It is subdivided into 100 (, singular: ), a word that also means "money" in the Romanian language. Etymology The name of the currency means "lio ...

, monetary unit of Romania

Places

* LEU, IATA code for

Andorra–La Seu d'Urgell Airport Andorra–La Seu d'Urgell Airport (, ; ) is a public airport owned by the government of Catalonia and hosts general aviation and commercial flights. It is located in the municipality of Montferrer i Castellbò in Catalonia, eastern Spain, and se ...

in Spain *

Leu, Dolj Leu is a commune in Dolj County, Oltenia, Romania Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia ...

, a commune in Dolj County, Romania

Science and technology

Low-enriched uranium Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235U) has been increased through the process of isotope separation. Naturally occurring uranium is composed of three major isotopes: uranium-238 (238U ...

, uranium that is enriched but to less than 20% U-235 * Leu (or L), abbreviation for

leucine Leucine (symbol Leu or L) is an essential amino acid that is used in the biosynthesis of proteins. Leucine is an α-amino acid, meaning it contains an α-amino group (which is in the protonated −NH3+ form under biological conditions), an α-Car ...

, an amino acid * Lineside Electronics Unit, a component of the

European Train Control System The European Train Control System (ETCS) is a train protection system designed to replace the many incompatible systems used by European railways, and railways outside of Europe. ETCS is the signalling and control component of the European ...

People with the surname

* August Leu (1818–1897), German painter *

Mihai Leu Mihai Leu also known as Michael Löwe (born 13 February 1968, in Hunedoara) is a Romanian former professional boxer who competed between 1991 and 1997. He held the WBO welterweight title in 1997. Leu retired after one title defense, against Mich ...

(1968–2025), Romanian professional boxer Romanian-language surnames {{Lion-surname