| UAS | O'zbekiston Respublikasi Fanlar Akademiyasi 
| Others |
| UAS | Samburu, Kenya
| Others |
| UAS | Ubuntu Advantage Storage
| Others |
| UAS | Ukrainian Academy of Sciences
| Others |
| UAS | Un-Available Seconds
| Others |
| UAS | Unavailable Seconds
| Others |
| UAS | Under Armour Sportswear
| Others |
| UAS | Understanding of Alcoholism Scale
| Others |
| UAS | Unicenter AutoSys Starter
| Others |
| UAS | Unifi Application Server
| Others |
| UAS | Uniform Access Solution
| Others |
| UAS | Union Argentina De Sordomudos
| Others |
| UAS | United Air Specialists
| Others |
| UAS | United Armenian Students
| Others |
| UAS | United Armored Services
| Others |
| UAS | United Auto Service
| Others |
| UAs | United Autosports
| Others |
| UAS | Universal Access Server
| Others |
| UAS | Universal Accounting Software
| Others |
| UAS | Universal Anchorage System
| Others |
| UAS | Universal Application Server
| Others |
| UAS | Universal Atlantic Systems
| Others |
| UAS | Universal Authentication Server
| Others |
| UAS | Universal Automation Systems
| Others |
| UAS | University Accounting Service
| Others |
| UAS | University Accounting Services, Llc.
| Others |
| UAS | University Auxiliary Services
| Others |
| UAS | University of Agricultural Sciences
| Agriculture, Education, College, University |
| UAS | University of Alaska Southeast
| Others |
| UAS | University of Alaska, Southeast
| Others |
| UAS | University of Arizona South
| Others |
| UAS | Unmanned Aerial System
| Military, Air Force, Army, Defence, Marine Corps, Navy, Special Forces, Weapon, Police, Technology, Satellite Technology, Security, Transport, Air Transport, Aircraft, Airport |
| UAS | Unmanned Aircraft System
| Military, Air Force, Army, Defence, Marine Corps, Navy, Special Forces, Weapon, Police, Technology, Satellite Technology, Security, Transport, Air Transport, Aircraft, Airport |
| UAS | Upper Memory Address Strobe
| Others |
| UAS | Upstream Activating Sequence
| Others |
| UAS | Upstream Activating Sequences
| Others |
| UAS | Upstream Activating System
| Others |
| UAS | Upstream Activation Site
| Others |
| UAS | Upstream Activator Sequence
| Others |
| UAS | Urticaria Activity Score
| Others |
| UAS | User Accounts Security
| Others |
| UAS | User Agent Server
| Others |
| UAS | User Agent Switcher
| Others |