| Acronym | Definition |
|---|
| HAU➣Hellenic American Union |
| HAU➣Haryana Agricultural University (India) |
| HAU➣Holy Angel University (Philippines) |
| HAU➣How About You? |
| HAU➣Hanoi Architectural University |
| HAU➣Hemagglutinating Unit |
| HAU➣High Acuity Unit (healthcare) |
| HAU➣Haugesund, Norway - Karmoy (Airport Code) |
| HAU➣Host Attachment Unit |