| Union Theological Seminary in the City of New York | Uniondale, New York | UnionFS |
| Unionidae | Unionoida | UnionPay |
| Unionpay | Unionville | Unionville, Missouri |
| Unior d.d. | Unipol | Unipol Gruppo Finanziario |
| Unipol Gruppo Finanziario S.p.A. | UniProt | Uniq |
| UNIQ | UNIQA Grand Prix | Uniqlo |
| UNIQUE | Unique Alpine TPG-1 | Unique Device Identification |
| UNIS | UniSA-Australia | Uniscope |
| Unison | Unison (альбом) | Unison (значения) |
| Unisonic | Unisonic (Альбом) | Unisonic (альбом) |
| Unisonic (значения) | Unistim | UniSynEdit |
| Unisys | Unit | Unit 88 |
| UNITA | Unitan | Unitas Fratrum |
| Unitatis Redintegratio | Unitatis redintegratio | Unitán |
| Unité | Unite | UNiTED |
| United 93 | United Abominations | United Air Lines |
| United Aircraft | United Airlines | United Airlines 173 |
| United Airlines Flight 173 | United Airlines Рейс 173 | United Airlines/HDNOZ |
| United Airways | United Airways Bangladesh | United American Lines |
| United Arab Airlines Flight 749 | United Artists | United Artists (значения) |
| United Artists (киностудия) | United Artists Records | United Auto Group |
| United Bible Societies | United Breaks Guitars | United Buddy Bears |
| United Capital Partners | United Center | United Company Rusal |
| United Eagle Airlines | United Express | UNITED for Intercultural Action |
| United for Intercultural Action | United Front Games | United Fruit Company |
| United Game Artists | United Kingdom | United Launch Alliance |
| United Linux | United Malika | United Microelectronics Corporation |
| United Minerals Group | United Music Group | United Nations |
| United Nations Commission on Human Rights | United Nations Education, Scientific and Cultural Organization | United Nations Environment Programme |
| United Nations Global Compact | United Nations Industrial Development Organization | United Nations Office on Drugs and Crime |
| United Nations Protection Force | United of Manchester | United Parcel Service |
| UNITED por Interkultura Agado | United Press | United Press International |
| United Service Organizations | United Soccer League | United Soccer League Division III |
| United Space Alliance | United States | United States Agency for International Development |
| United States Air Force | United States Army Europe | United States Botanic Garden |
| United States Capitol Subway System | United States Census Bureau | United States Chamber of Commerce |
| United States Coast Guard | United States Computer Emergency Readiness Team | United States Congress |
| United States Department of Agriculture | United States Department of Justice | United States Department of State |
| United States Department of the Interior | United States dollar | United States dollars |
| United States Environmental Protection Agency | United States Federal Reserve | United States Figure Skating Association |
| United States Geological Survey | United States Hockey League | United States Holocaust Memorial Museum |
| United States House Committee on Foreign Affairs | United States Joint Forces Command | United States Marine Corps |
| United States Marine Corps Squad Advanced Marksman Rifle | United States Medical Licensing Examination | United States Military Standard |
| United States National Academy of Sciences | United States National Museum | United States Naval Academy |
| United States Naval Observatory | United States Naval Observatory Flagstaff Station | United States Navy |
| United States Navy Marine Mammal Program | United States Navy Yard, New York | United States of America |
| United States of Canada and Jesusland | United States of Eurasia | United States of Eurasia/Collateral Damage |
| United States Patent and Trademark Office | United States Playing Card Company | United States Postal Service |
| United States Reports | United States Rifle, cal .30, Model of 1917 | United States Tennis Association |
| United Technologies | United Technologies Corporation | United Way International |
| United Way Worldwide | United World Wrestling | UnitedHealth Group |
| UnitedHealth Group Inc | Unitel | Unitel (значения) |
| Uniteller | UniTESK | UniTesK |
| Uniting Nations | Units in the City | Unity |
| Unity (game engine) | Unity (среда рабочего стола) | Unity (альбом Rage) |
| Unity (альбом Ларри Янга) | Unity (значения) | Unity (игровой движок) |
| Unity (оболочка рабочего стола) | Unity (подводный кабель) | Unity 3D |
| Unity Engine | Unity Line | Unity of Command |
| Unity Technologies | Unity3D | Univa Grid Engine |
| UNIVAC | UNIVAC (компьютер) | UNIVAC 1 |
| UNIVAC 1103 | UNIVAC 1218 | UNIVAC EXEC 8 |
| UNIVAC I | UNIVAC LARC | UniVBE |
| Univega | Univers Zéro | Univers Zero |
| Universa | Universal | Universal (телеканал) |
| Universal (альбом Borknagar) | Universal (группа, Венгрия) | Universal 3D |
| Universal Carrier | Universal Channel | Universal Chess Interface |
| Universal Disk Format | Universal Flash Storage | Universal Focus |
| Universal J | Universal Media Disc | Universal Migrator |
| Universal Mobile Systems | Universal Music | Universal Music Group |
| Universal Music Japan | Universal Orlando | Universal Pictures |
| Universal Plug and Play | Universal plug-and-play | Universal Postal Union |
| Universal Product Code | Universal Pulse | Universal Records |
| Universal Republic | Universal Republic Records | Universal Resource Locator |
| Universal Serial Bus | Universal Studios | Universal Studios: Theme Parks Adventure |
| Universal Time Coordinated | Universal Windows Platform | Universala vortaro |
| Universalis Cosmographia | Universalis Mundaneum | Universally Speaking |
| Universe | Universe (Альбом) | Universe (альбом) |
| Universe Agency | Universe at War: Earth Assault | Universe Sandbox |
| Universe Sandbox 2 | Universe Sandbox ² | Universe Sandbox² |
| Universe Today | Universi Dominici Gregis | Universidad César Vallejo |
| Universidad de Cádiz | Universidad de Chile | Universidad de Chile (football club) |
| Universidad de Granada | Universidad de San Marcos | Universidad Nacional de Trujillo |
| Universidad Nacional Mayor de San Marcos | Universidad Ricardo Palma | Universitario de Deportes |
| Universitas Petropolitana | Universitatea din București | Università degli Studi di Padova |
| Universität Oldenburg | Universität Potsdam | Universität Stuttgart |
| Universitätkirche (Münster) | Université de Lausanne | Universiteit Leiden |
| Universiteit van Amsterdam | Universiteit van Kaapstad | University College Dublin |
| University College London | University Extension | University extension |
| University of Aberdeen | University of Arizona | University of Auckland |
| University of Berne | University of British Columbia | University of Calcutta |
| University of Calgary | University of California | University of California, Berkeley |
| University of California, Davis | University of California, Los Angeles | University of California, San Diego |
| University of California, Santa Barbara | University of California-Berkeley | University of Cambridge |
| University of Canberra Brumbies | University of Canterbury | University of Cape Town |
| University of Catania | University of Chicago | University Of Chicago |
| University of Colorado | University of Colorado at Boulder | University of Connecticut |
| University of Delhi | University of Denver | University of Dundee |
| University of Durban-Westville | University of East Anglia | University of East London |
| University of Erlangen-Nuremberg | University of Florida | University of Göttingen |
| University of Georgia | University of Glasgow | University of Heidelberg |
