| Under the Boardwalk (песня) | Under the Bridge | Under the Gun (альбом Poco) |
| Under the Gun (песня The Sisters of Mercy) | Under The Influence | Under the Influence |
| Under the Influence (альбом Overkill) | Under the Influence (альбом Warrant) | Under the Iron Sea |
| Under the Iron Sea Tour | Under the Ladder | Under the Mistletoe |
| Under the Moonspell | Under the Pink | Under the Radar Over the Top |
| Under the Red Cloud | Under the Red Sky | Under the Sign of Hell |
| Under The Sign Of Hell | Under the Sign of the Black Mark | Under the Table and Dreaming |
| Underclass Hero | Underclass Hero (песня) | Undercode |
| Undercover | Undercover: Operation Wintersonne | Undercovers |
| Underdog | Underground | Underground (альбом) |
| Underground: VooDoo Night Sessions | Underneath | Underneath the Colours |
| Underneath Your Clothes | Undernet | Underoath |
| UnderOATH | Underrail | Underscore |
| Underscore.js | Undertaker | Undertale |
| Undertow | Underw. | Underwater Berets |
| Underwood Typewriter Company | Underwoodisaurus milii | Underworld |
| Underworld (группа) | Underworld: New Dawn | Underwriter |
| Underwriters Laboratories | Undine | Undisclosed Desires |
| Undisputed | Undisputed (Ludacris) | Undisputed (песня) |
| Undisputed 2 | Undisputed Attitude | Undo (песня Санны Нильсен) |
| UNDOF | Undorosaurus | UNDP |
| Undrop | Undulatus asperatus | Une enfant du siècle |
| Une jeune fillette | Une jeune pucelle | Une Vie D'Amour |
| Une vie d'amour | Une vie d’amour | Une vie de chat |
| Unearth | Unearthed | Uneasy Listening Vol. 1 |
| Uneasy Listening Vol. 2 | UNECE | Unenlagia |
| Unenlagiinae | UNEP | UNESCO |
| UNESCO-IHE | Unescoceratops | Unescoceratops koppelhusae |
| Unespichnium | UNetbootin | Uneven Beats |
| Uneven structure | Uneven Structure | Unexpand |
| Unexpected | Unexpected (альбом Энджи Стоун) | UNF |
| Unfabulous | Unfair Science Fair | Unfaithful |
| Unfinished Music No. 2: Life With The Lions | Unfinished Music No.1: Two Virgins | Unfinished Music No.2: Life with the Lions |
| Unfinished Music No.2: Life With The Lions | Unfinished Sympathy | Unforgettable |
| Unforgettable (песня) | Unforgiven (2005) | Unforgiven (2007) |
| Unforgiven (2008) | Unformal | UNFPA |
| Unfriendly Skies (CSI) | Ungenennte Heidenthume | Unger |
| Ungernia | Ungnadia | Ungnadia speciosa |
| Ungoliant | Unguiculariella | Unguiculariella bhutanica |
| Unhate | Unhate (рекламная кампания кампания) | Unhate (рекламная кампания) |
| Unhate (коммуникационная кампания Benetton Group) | Unhate (коммуникационная кампания) | UNHCR |
| Unheilig | Unholan urut | Unholy |
| Unholy (альбом) | Unholy (значения) | Unholy (песня) |
| Unholy Crusade | Unholy Cult | UNI |
| Uni Air | Unia | Unia Films S.A. |
| UNIAN | Uniao International de Capoeira Regional | UNIATEC |
| União Africana | União Internacional de Capoeira Regional | Unión Africana |
| Unibail-Rodamco | Unibank | Unibet |
| Unibet Open | Unibet.com | Unibet.com (велокоманда) |
| Unibuffel | Unibus | Unicamente Celentano |
| UNICAR | Unicast | UNICEF |
| UNICEF Open | UNICEF Open 2010 | UNICEF Open 2011 |
| UNICEF Open 2012 | Unicheck | Unico |
| Unicode | UNICODE | Unicode 6.1.0 |
| Unicoi County, Tennessee | Uniconf | Unicorn |
| Unicorn (band) | Unicorn (альбом Tyrannosaurus Rex) | Unicorn (альбом) |
| Unicorn (веб-сервер) | Unicorn (группа) | Unicos |
| UniCOS | UniCredit | Unicredit |
| UniCredit Bank | UniCredit Bank (Украина) | UniCredit Czech Open |
| UNICubeSAT | UNIDO | Unie van Suid-Afrika |
| UNIFFAC | Unification | Unification Theological Seminary |
| Unified Communications | Unified Extensible Firmware Interface | Unified Medical Language System |
| Unified Modeling Language | Unified Parallel C | Unified Process |
| Unified Thread Standard | Unified threat management | Unified Video Decoder |
| UNIFIL | Unifolium bifolium | Unifolium quadrifidum |
| Unifon | Uniform Memory Access | Uniform Office Format |
| Uniform resource identifier | Uniform Resource Identifier | Uniform Resource Locator |
| Uniform Resource Name | Unify | Unigenitus |
| Unigine | UNIGINE Corp. | Unigine Engine |
| Unigine Heaven Benchmark | Unigraphics | Unigraphics (NX) |
| Unigraphics NX | Uniklubi | Unikonta |
| UNIL | Unilever | UNIMA |
| UNIMARC | UNIMED | Unimedia |
| Unimog | Uninhabited Planet Survive | Uninhabited Planet Survive! |
| Uninstaller | Unintended | Uninterruptable Power Supply |
| Uninterruptible Power Supply | Uninvited | Uninvited (игра) |
| Uninvited (песня) | Unio | Unio crassus |
| Unio pictorum | UNION | Union |
| Union (SQL) | Union (альбом) | Union (журнал) |
| Union (значения) | Union (компания) | Union Aerospace Corporation |
| Union africaine | Union économique et monétaire ouest-africaine | Union Black |
| Union Boxing Promotion | Union Card | Union City, New Jersey |
| Union County, Arkansas | Union County, Florida | Union County, Georgia |
| Union County, Illinois | Union County, Iowa | Union County, Mississippi |
| Union County, New Jersey | Union County, New Mexico | Union County, North Carolina |
| Union County, Ohio | Union County, Tennessee | Union Cycliste Internationale |
| Union cycliste internationale | Union de transports aériens | Union de Transports Aériens |
| Union der deutschen Akademien der Wissenschaften | Union des Transports Aériens | Union Européenne de Cyclisme |
| Union Flag | Union Gap | Union Glashütte |
| Union Internationale des Associations d'Alpinisme | Union J | Union Jack |
| Union mount | Union Movement | Union Observatory |
| Union Observatory Annex | Union of European Football Associations | Union of South Africa |
| Union Pacific | Union Pacific 3985 | Union Pacific 844 |
| Union Pacific 8444 | Union Pacific Big Boy | Union Pacific Challenger |
| Union Pacific Railroad | Union Parish, Louisiana | Union Pasific Big Boy |
| Union Pay | Union sportive bressane | Union sportive bressane Pays de l'Ain |
| Union sportive carcassonnaise XV | Union sportive dacquoise | Union Sportive de Ouagadougou |
| Union Sportive du Foyer de la Régie Abidjan-Niger | Union sportive Oyonnax rugby | Union Square (BMT Canarsie Line) |
| Union Street (BMT Fourth Avenue Line) | Union Theological Seminary | Union Theological Seminary in the City of New York |
| Uniondale, New York | UnionFS | Unionidae |
