HL
- Call signs in Korea
- Croatian Labourists – Labour Party
- HL Group
- HL v United Kingdom
- Half-Life (series)
- Half-Life (video game)
- Half-life
- Hangars Liquides
- Hargreaves Lansdown
- Harry Styles
- Headline
- Hectolitre
- Heilongjiang
- Hessdalen light
- Hit list (disambiguation)
- Hitachi-LG Data Storage
- Hodgkin's lymphoma
- Hogan Lovells
- Hong Kong Higher Level Examination
- Horseland
- Hotline
- Houlihan Lokey
- House of Lords
- Hovedstadens Lokalbaner
- Hueiyen Lanpao
- Hydrogen line
- Hypotenuse Leg
- International Baccalaureate Diploma Programme
- List of Latin-script digraphs
- Louis Tomlinson
- One Direction
- Reduction of /hl/
- Voiceless alveolar lateral fricative