| Acronym | Definition |
|---|
| UAR | United Arab Republic |
| UAR | Up and Running |
| UAR | User Access Review (SAP) |
| UAR | Unión Argentina de Rugby (Argentinian Rugby League) |
| UAR | Undergraduate Advising and Research (Stanford University; Palo Alto, CA) |
| UAR | Upper Austrian Research |
| UAR | Urban Affairs Review |
| UAR | Unclaimed Assets Register (UK) |
| UAR | Utah Association of Realtors |
| UAR | United Artists Records, Inc. (record label) |
| UAR | Unit Appreciation Rights |
| UAR | Utah Administrative Rules |
| UAR | Unusual Attitude Recovery (aviation) |
| UAR | Uniformly At Random |
| UAR | Union of African Railways |
| UAR | User Authorization Request |
| UAR | Unconventional Assisted Recovery |
| UAR | Unstable Ape Records (Australian independent record label) |
| UAR | Uranyl Acetate Replacement (staining) |
| UAR | Upper Airway Restriction |
| UAR | Unique Application Reseller (software sales) |
| UAR | Unattended Radar |
| UAR | Uniform Administrative Requirements (government regulations) |
| UAR | Unit Airman Record |
| UAR | Utilities Accommodation Rules (various locations) |