| Rank | Abbreviation | Meaning |
|---|
| ***** | UACA | United Against Child Abuse Coalition
| |
| ***** | UACA | Unión Argentina de Ciegos y Amblíopes
| |
| ***** | UACA | Union Aéronautique de la Côte d'Azur
| |
| ***** | UACA | United Against Child Abuse
| |
| ***** | UACA | University of Alberta Chaplains' Association
| |
| ***** | UACA | Uniform Anatomical Gift Act
| |
| **** | UACA | Unité d'Anesthésie et de Chirurgie Ambulatoire
| |
| **** | UACA | Universidad Adventista de Centro America
| |
| **** | UACA | Union of Australian College Academics
| |
| **** | UACA | Unidad Académica de Contaduría y Administración
| |
| **** | UACA | University of Adelaide Christian Association
| |
| **** | UACA | United American Contractors Association
| |
| **** | UACA | Upper Arlington Civic Association
| |
| **** | UACA | Universidad Autónoma de Centro América
| |
| **** | UACA | Union Acceptance Corporation
| |
| *** | UACA | Upper Albany Clay Arsenal
| |
| *** | UACA | University at Albany Christian Association
| |
| ** | UACA | United Area Citizens Agency
| |
| ** | UACA | Universal Anglican Church of America
| |
| ** | UACA | Universal Anti-Chav Alliance
| |
| ** | UACA | Unrestricted Availability Compliance Alternative
| |
| ** | UACA | US Air Consolidators Association
| |
| ** | UACA | Uveal Autoantigen with Coiled-coil domains and Ankyrin
| |
| ** | UACA | Utah Administrative Code Annotated
| |
| * | UACA | Unión Aduanera Centroamericana
| |