| Acronym | Definition |
|---|
| GCAU➣Grain Consuming Animal Unit (agriculture) |
| GCAU➣Génie Civil Architectural et Urbain (French: Architectural and Urban Civil Engineering) |
| GCAU➣Gujarati Cultural Association of Utah |
| GCAU➣Groupe Coopérative Architecture et Urbanisme (French: Architecture and Urbanism Cooperative Group) |