| Acronym | Definition |
|---|
| LIU | Linköpings Universitet (Sweden) |
| LIU | Long Island University (New York) |
| LIU | Look It Up |
| LIU | Lebanese International University (Lebanon) |
| LIU | Line Interface Unit |
| LIU | Laureate International Universities (Laureate Education, Inc.; Baltimore, MD) |
| LIU | Light Interface Unit |
| LIU | Light Industrial Unit |
| LIU | Luzerne Intermediate Unit (Pennsylvania) |
| LIU | LAN Interface Unit |
| LIU | Lightguide Interconnection Unit (AT&T) |
| LIU | Laugh It Up (movie) |
| LIU | Lobe Insertion Unit |
| LIU | Laughing It Up |
| LIU | Laboratoire d'Informatique de l'Université du Maine (French: University of Maine Computing Laboratory; Orono, ME) |
| LIU | License Investigation Unit (various states) |