GCAU
| 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) |