Editing HL

'''HL''' may refer to:
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==In arts and entertainment==
* [[Half-Life (series)|''Half-Life'' (series)]], a video game series by Valve
** [[Half-Life (video game)|''Half-Life'' (video game)]], the first game in that series
* ''[[Horseland]]'', an online community and virtual game
* ''[[Harry Styles]]'' and ''[[Louis Tomlinson]]'', part of the popular boyband ''[[One Direction]]'' known as HL when referred to together

== Businesses ==
* [[Hangars Liquides]], an electronic music label
* [[Hargreaves Lansdown]], a British investment company
* [[Hitachi-LG Data Storage]], an optical disc drive manufacturer
* [[Hogan Lovells]], an international law firm
* [[Houlihan Lokey]], an international investment bank 
* [[Hovedstadens Lokalbaner]], a Danish local railway company
* [[HL Group]], a South Korean company

== In linguistics ==
* {{angbr|hl}}, a [[List of Latin-script digraphs#H|Latin-script digraph]]
* [[Reduction of /hl/]] to /l/ in Old/Middle English
* [[Voiceless alveolar lateral fricative]], a sound sometimes represented as {{angbr|hl}}

== Science, technology, and mathematics ==
* HL gas, a mixture of [[sulfur mustard]] and lewisite
* [[Half-life]], in nuclear physics
* [[Hectolitre]], a unit of volume
* [[Hessdalen light]], an unexplained light seen in Norway
* [[Hodgkin's lymphoma]], a highly treatable hematological malignancy ("blood cancer")
* [[Hotline]], a telecommunications link
* [[Hydrogen line]], a spectral line
* [[Hypotenuse Leg]], a postulate of geometry
* HL, an amateur radio [[Call signs in Korea|call sign prefix in South Korea]]

== Other uses ==
* [[Hueiyen Lanpao]], a Meitei-English bilingual newspaper of Manipur
* [[Croatian Labourists – Labour Party]] (Croatian: ''{{lang|hr|Hrvatski laburisti - Stranka rada}}''), a political party in Croatia
* [[Headline]], a text indicating the nature of the article below it
* [[Heilongjiang]], a province of China (Guobiao abbreviation HL)
* [[Hit list (disambiguation)]]
* [[House of Lords]], the upper house of the Parliament of the United Kingdom
* Higher Level, a level of course difficulty in the [[International Baccalaureate Diploma Programme]]
* [[Hong Kong Higher Level Examination]], a standardized examination from 1979 to 1992

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