HL

HL may refer to:

• Half-Life (series), a video game series by Valve
  • 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

• 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

• ⟨hl⟩, a Latin-script digraph
• Reduction of /hl/ to /l/ in Old/Middle English
• Voiceless alveolar lateral fricative, a sound sometimes represented as ⟨hl⟩

• 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 sign prefix in South Korea

• Hueiyen Lanpao, a Meitei-English bilingual newspaper of Manipur
• Croatian Labourists – Labour Party (Croatian: 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

This disambiguation page lists articles associated with the title HL.
If an internal link led you here, you may wish to change the link to point directly to the intended article.