Fußball Mannschaften, die mit U beginnen
- University Of Tasmania (R)
- Union Saint Gilloise (R)
- Ujpesti II
- Ukraine U20
- Union Hallein
- Universitario (W)
- Ural Sverdlovsk Oblast U21
- Usti Nad Labem 2
- Ujezd Nad Lesy
- UD Anaza
- Uniao Sao Joao U23
- UC Dublin Waves Women
- Union Sportive Monastirienne Monastir
- US Sassuolo W.
- UD Maracena U19
- Unione Sanremo (Sanremese)
- Ubon FC
- UDS Roriz
- Unye Gucu Futbol Kulubu
- Unye Gucu Fk Women
- Uniao Nogueirense FC (Wom)
- UKS Blyskawica Warszawa
- UB Conquense (Youth)
- University Of Queensland U23
- US Yacoub El Mansour
- Ugento Calcio
- UD Granadilla Tenerife Sur B
- UD Da Serra
- Unye Gucu
- Us Yacoub Mansour
- US Avranches MSM
- Uniao Torreense (W)
- Uniao Nogueirense (Women)
- UB Conquense U19
- Uruguay Montevideo (N)
- Ukraine (U 19)
- Union Viera (Women)
- USV Raika Unterlamm
- UFC Croatia Salzburg
- Uzbekistan U21
- UD Vessuwan FC
- UKS Biale Orly
- U.S. Salernitana 1919 U20
- UE Gimnastic Sant Vicent
- USA Lury S/Arnon
- US Saint Malo (Wom)
- United Villagers
- Uniao Recreativo Cadima
- US Angri Calcio 1927 ASD
- US Saint Malo Women
- USV Wundara Wies
- UKS Staszkowka Jelna
- US Sandweiler
- USV Weis 1946
- Um El Quttein
- University Of Malaya FC
- UK Merced Bobcats
- University Of Saint Francis Athletics
- USD Casatese Merate
- USF Cougars Athletics (Wom)
- UC Dublin (U 19)
- UCD Dublin U19
- USV Eschen/Mauren III
- UMF Stjarnan U19
- UTS Firehawks
- UD Tocha