Fußball Mannschaften, die mit U beginnen
- Union Deportivo Ascension
- UD Tacna Libre De Tumbes
- Union Soratira De Azangaro
- Universidad Del
- Unye Kadin SK
- USAC (Women)
- US Crepy En Valois
- Union Deportiva Magos
- US Montagnarde
- US Nousseviller
- USM El Harrach (U 21)
- University Of The Western Cape Women
- US Khenchela
- US Pontedera 1912
- Ukraine U19 (N)
- UD Granadilla Tenerife B W
- Union De Sante Fe
- Ukraine (U 21)
- US Bolbec
- US Noyelles Sous Lens
- Ubon Kids City
- USA (offsides)
- Unirea Amarastii De Jos
- Unirea 2023 Garla Mare
- Universidad Guadalajara III
- USD Sestri Leva
- U.A. De Zacatecas
- UGS
- Union Campesinos
- Ujpest FC (UTE) (U19)
- Universidad Guadalajara 3
- Uttar Pradesh FT
- U Craiova 1948 SA U19
- Union De Campesinos FC
- UD La Palma Tarsa Women
- UD Talavera
- Union De Campes
- UKS Loczki Wyszkow
- Universitario S.F.X.CH
- U20 Morocco
- Unye Kadin SK (Women)
- Urgatzi KK
- UD Alagoana AL (Women)
- US Canoense AL (Women)
- UD Talavera La Real
- Uhersky Brod (Women)
- Ujpest FC Kft II
- Ulis CO
- Uniao Desportiva Alagoana
- Uniao Sportiva Canoense
- Urgatzi
- UNIVAP Apodi RN (Wom)
- USA (U 20)
- Upi Onm
- Ubonkids City
- Udon Thani City
- Udonthani City FC
- Unirea Tomsani
- US St. Malo
- UFC Szekszard
- US Chaouia (U 21)
- US Saint Philbert De Grand Lieu
- UP Viso
- Union Del Norte
- UD San Antonio Pureza (Youth)
- Udon Thani Rajabhat University
- Uttarakhand FA
- Ubon Ratchathani Rajabhat University