| Acronym | Definition |
|---|
| USAP | Universal Stainless & Alloy Products |
| USAP | United States Antarctic Program |
| USAP | Union Sportive Arlequins Perpignan (French rugby team) |
| USAP | Uniform Single Attestation Program (Mortgage Bankers Association) |
| USAP | Unacknowledged Special Access Program (US DoD) |
| USAP | Universal Security Audit Programme (International Civil Aviation Organization) |
| USAP | Unió Esportiva Arlequins de Perpinyà |
| USAP | Unstable Angina Pectoris (chest pain at rest) |
| USAP | Underwater Acoustics Signal Processing |
| USAP | Unified Slot Assignment Protocol |
| USAP | Unbundled Service Access Point |