Association) URC (i) Uganda Railways Corporation United Rugby Championship Utility regulatory commission urd – (s) Urdu language (ISO 639-2 code) URD – (i) User requirements document URI (i) Uniform Resource Identifier University of Rhode Island URL – (a/i) Uniform Resource Locator ("earl") URU – (s) Uruguay (IOC and FIFA trigram, but not ISO 3166) URY – (s) Uruguay (ISO 3166 trigram) US US – (i) United States (also (s) ISO 3166 and FIPS 10-4 country code digram) (i) United States of America (also (s) ISO 3166 trigram) United States Army USAF – (i) United States Air Force USAFSPC – (i) U.S. Air Force Space Command USAACE – (p) United States Army Aviation Center of Excellence, Fort Rucker, Alabama USAADAC – (i) United States Army Air Defense Artillery School, Fort Sill, Oklahoma USAAS – (p) United States Army Armor School, Ft. Benning, Georgia USAIC (i) U.S. Army Infantry Center U.S. Army Intelligence Center USAID – (a/i) United States Agency for International Development USAP (a) Union Sportive des Arlequins Perpignanais (i) United States Antarctic Program USAPATRIOT – (i) Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism USAREUR – (p) United States Army Europe USB – (i) Universal Serial Bus USC (i) United States Code University of South Carolina University of Southern California USCG – (i) United States Coast Guard USCINCSPACE – (p) United States Commander in Chief, Space Command USD (s) United States dollar (ISO 4217 currency code) USD(A&S) – (i) Under Secretary of Defense for Acquisition and Sustainment ASD(R&E) Under Secretary of Defense for Research and Engineering USD(C) – (i) (U.S.) Under Secretary of Defense (Comptroller) USDA – (i) United States Department of Agriculture USDI – (i) United States Department of the Interior USDOE – (i) United States Department of Energy USD(I) – Under Secretary of Defense for Intelligence USDPR – (i) (U.S.) Under Secretary of Defense for Personnel and Readiness USDP – (i) (U.S.) Under Secretary of Defense for Policy USDRE – (i) (U.S.) Under Secretary of Defense for Research and Engineering USEC – (a) United States Enrichment Corporation USFL – (i) United States Football League, two different leagues of American football, one operating from 1983–1985 and the second having started play in 2022 USFWS – (i) United States Fish and Wildlife Service USGS – (i) United States Geological Survey USIA – (i) United States Information Agency USJFCOM – (p) United States Joint Forces