UAU
| Acronym | Definition |
|---|---|
| UAU | Underwater Archaeology Unit (North Carolina Department of Cultural Resources) |
| UAU | Uterine Activity Unit (gynecology) |
| UAU | Universities Athletic Union |
| UAU | University of Alberta Ultimate (Canada) |
| UAU | Underwood and Underwood (photography; est. 1880; New York, NY) |
| UAU | United Activities Unlimited, Inc. (est. 1977; Staten Island, NY) |