HL may refer to:

In arts and entertainment

* ''Half-Life'' (series), a video game series by Valve ** ''Half-Life'' (video game), the first game in that series * ''

Horseland Horseland was an online community and browser game where members took care of, bred, trained and showed horses and dogs. Begun in 1994 in the United States, Horseland had grown to have more than 8 million users who played from all over the world. ...

'', an online community and virtual game * ''

Harry Styles Harry Edward Styles (born 1 February 1994) is an English singer, songwriter, and actor. His musical career began in 2010 as a solo contestant on the British music competition series ''The X Factor (UK TV series), The X Factor''. Following hi ...

'' and ''

Louis Tomlinson Louis William Tomlinson (; born Louis Troy Austin; 24 December 1991) is an English singer and songwriter. He rose to fame as a member of the boy band One Direction. Tomlinson began his career appearing in television dramas before he auditioned ...

'', part of the popular boyband ''

One Direction One Direction, often shortened to 1D, are an English-Irish pop boy band formed in London in 2010. The group are composed of Niall Horan, Liam Payne, Harry Styles, Louis Tomlinson, and previously Zayn Malik until his departure from the gr ...

'' known as HL when referred to together

Businesses

Hangars Liquides Hangars Liquides, also known as HL, is a French electronic label. It was created by La Peste (aka :fr:Laurent Mialon) in 1998. Initially Hangars Liquides was Speedcore-oriented but was quickly categorized as experimental music within the hardcore t ...

, an electronic music label *

Hargreaves Lansdown Hargreaves Lansdown plc is a British financial service company based in Bristol, England. It sells funds and shares and related products to retail investors in the United Kingdom. The company is listed on the London Stock Exchange and is a consti ...

, a British investment company *

Hitachi-LG Data Storage Hitachi-LG Data Storage (HLDS, HL-DT-ST or H-L Data Storage), a joint venture between Hitachi and LG, is a manufacturer of DVD and Blu-ray The Blu-ray Disc (BD), often known simply as Blu-ray, is a digital optical disc data storage form ...

, an optical disc drive manufacturer *

Hogan Lovells Hogan Lovells is an American-British law firm co-headquartered in London and Washington, DC. The firm was formed in 2010 by the merger of the American law firm Hogan & Hartson and the British law firm Lovells. It employs about 2,400 lawyers acr ...

, an international law firm * Houlihan Lokey, an international investment bank *

Hovedstadens Lokalbaner Hovedstadens Lokalbaner () is a Danish company which owns the trains and tracks of several local railways around Copenhagen: Frederiksværkbanen, Gribskovbanen, Hornbækbanen, Lille Nord, Nærumbanen and Østbanen. It leases trains and trackage ...

, a Danish local railway company

In linguistics

* , a Latin-script digraph * Reduction of /hl/ to /l/ in Old/Middle English *

Voiceless alveolar lateral fricative The voiceless alveolar lateral fricative is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents voiceless dental, alveolar, and postalveolar lateral fricatives is , ...

, a sound sometimes represented as

Science, technology, and mathematics

* HL gas, a mixture of

sulfur mustard Mustard gas or sulfur mustard is a chemical compound belonging to a family of cytotoxic and blister agents known as mustard agents. The name ''mustard gas'' is technically incorrect: the substance, when dispersed, is often not actually a gas, b ...

and lewisite *

Half-life Half-life (symbol ) is the time required for a quantity (of substance) to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable ato ...

, in nuclear physics * Hectolitre, a unit of volume *

Hessdalen light The Hessdalen lights are unidentified lights observed in a stretch of the Hessdalen valley in rural central Norway. Background The Hessdalen lights are of unknown origin. They appear both by day and by night, and seem to float through and abov ...

, an unexplained light seen in Norway * Hodgkin's lymphoma, a highly treatable hematological malignancy ("blood cancer") *

Hotline A hotline is a point-to-point communications link in which a call is automatically directed to the preselected destination without any additional action by the user when the end instrument goes off-hook. An example would be a phone that automat ...

, a telecommunications link * Hydrogen line, a spectral line * Hypotenuse Leg, a postulate of geometry * HL, an amateur radio call sign prefix in South Korea

Other uses

Croatian Labourists – Labour Party The Croatian Labourists – Labour Party ( hr, Hrvatski laburisti - Stranka rada) is a social-democratic and democratic socialist political party in Croatia. It was formed in 2010 by a former trade unionist and People's Party MP Dragutin Lesar ...

(Croatian: '), a political party in Croatia * Headline, a text indicating the nature of the article below it *

Heilongjiang Heilongjiang () formerly romanized as Heilungkiang, is a province in northeast China. The standard one-character abbreviation for the province is (). It was formerly romanized as "Heilungkiang". It is the northernmost and easternmost province ...

, a province of China (Guobiao abbreviation HL) * Hit list (disambiguation) *

House of Lords The House of Lords, also known as the House of Peers, is the Bicameralism, upper house of the Parliament of the United Kingdom. Membership is by Life peer, appointment, Hereditary peer, heredity or Lords Spiritual, official function. Like the ...

, the upper house of the Parliament of the United Kingdom * Higher Level, a level of course difficulty in the

International Baccalaureate Diploma Programme The International Baccalaureate Diploma Programme (IBDP) is a two-year educational programme primarily aimed at 16-to-19-year-olds in 140 countries around the world. The programme provides an internationally accepted qualification for entry into ...

* Hospitality Lawyer, a hospitality resource website founded by

Stephen Barth Stephen or Steven is a common English given name, first name. It is particularly significant to Christianity, Christians, as it belonged to Saint Stephen ( grc-gre, Στέφανος ), an early disciple and deacon who, according to the Book of Ac ...

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