HLG
HLG is an abbreviation for:
- Hans-Leinberger-Gymnasium (Landshut) , a school in Landshut
- Helene-Lange-Gymnasium (Fürth) , a school in Fürth
- Helene-Lange-Gymnasium (Hamburg) , a Hamburg high school
- Helene-Lange-Gymnasium Markgröningen , a high school in Markgröningen, Baden-Württemberg
- Hermes Logistik Gruppe , see Hermes Europe
- Hessische Landgesellschaft (seat in Kassel) , state trustee for rural development
- Hybrid Log Gamma , a high-resolution color space in digital photography