| UPA | Underground Producers Alliance | |
| UPA | University Pathway Alliance | |
| UPA | Ulster Protestant Action | |
| UPA | United Patients Alliance | |
| UPA | Union des Producteurs Agricoles | |
| UPA | Unit of Public Administration | |
| UPA-FTT | Unión de Pequeños Agricultores -Federación de Trabajadores de la Tierra | |
| UPABA | Uganda Publishers and Booksellers Association | |
| UPAC | Ultralight Pilots Association of Canada | |
| UPAC | Unité Permanente AntiCorruption (Québec, Canada) | |
| UPAC | University Park Allocation Committee (PennState) | |
| UPAC | University Place Aquatic Club | |
| UPAC | Ulster Performing Arts Center | |
| UPAC | Utilities Policy Advisory Committee | |
| UPAC | University Programming Activities Committee | |
| UPAC | Utah Professional Archaeological Council | |
| UPAC | Union of Pan Asian Communities | |
| UPAC | University Park Allocation Committee | |
| UPAC | University Park Allocation Committee | |
| UPAC | Untermyer Performing Arts Council | |
| UPAC | Unidad de Poder Adquisitivo Constante | |
| UPACP | Unique Planted Abbreviation for Copyright Protection | |
| UPAD | La Unidad de Procesado y Archivo de Datos | |
| UPAD | Urban Planning and Architectural Design | |
| UPADI | União Panamericana de Associações de Engenheiros |
