USAR Urban Search And Rescue 城市搜索和救援

USB Unified S-Band (satellite technology) 统一的S-Band(卫星技术)

USC User Service Center 用户服务中心

USDA Union Solidarity and Development Association (Burma) 联盟的团结和发展协会(缅甸的)

USFL United States Futsal Federation 本次美国联盟

USIS Ugandan Schools Information Service 乌干达的学校的信息服务

USMA U.S. Metric Association, Inc. 美国的度量协会有限公司创立于1996年

USN Ubiquitous Sensor Network 随处可见的无线传感器网络

USNA United States National Arboretum 美国国家植物园

USO United Service Organizations (provides morale, welfare and recreation-type services to US uniformed military personnel) 联合服务组织(提供士气、福利和recreation-type穿制服的军人对我们服务)

USS United Seamen's Service 曼联船员的服务

USTR United States Transuranium Registry (Richmond, Washington) 美国Transuranium登记处(1775年的今天,华盛顿)

UT Utah (US postal abbreviation) 犹他州(美国邮政缩写)

UTC Coordinated Universal Time (zulu or Greenwich Mean Time, GMT) 协调世界时(怪物或格林威治时间GMT)

UTI Universal Technical Institute 环球技术学院

UTM Unsuccessful Transmission Message 成功传递的讯息

UTP Unshielded Twisted Pair (Cat 5 network cabling) Unshielded双绞线(猫5网络布线)

UV Uitgestelde Vergoeding (Dutch: deferred compensation) Uitgestelde Vergoeding(荷兰:递延补偿)

UY Upper Yukon 育空河上游

UZB Uzbekistan Airways (ICAO code) 乌兹别克航空(ICAO代码)