Fußball Mannschaften, die mit U beginnen
- US Souf U21
- United IK Nordic
- UB Mazaalainuud
- UD Almeria (W)
- Urartu II
- University of Tasmania SC Reserves
- Uruguay Montevideo
- UOR-5 Egoryevsk Youth
- Ulaanbaatar City FC
- USFA
- UMF Throttur Vogum
- Unity SC
- Universidad Catolica (W)
- University of Johannesburg (W)
- Uniao Desportiva Alagoana U20 (W)
- Ulytau FC
- UWA Nedlands FC Reserves
- Union Mondsee
- UDG Tenerife (W)
- Universidad Cesar Vallejo (W)
- UMF Sindri
- United PDX (W)
- US Angri Calcio
- USD Casateserogoredo
- URSL Vise
- University of Pretoria FC (W)
- Utah Avalanche (W)
- Utah Surf (W)
- Unifut Rosal (W)
- Universidad de Antioquia
- University Azzurri FC
- USV Deutsch Goritz
- UFC Hallein
- Ultimate Mostoles (VII)
- Ujpest FC U19
- United Old Road Jets FC
- UG 35
- Uganda Martyrs (W)
- Universitario del Beni
- UKZN FC (W)
- United PDX
- Universitet Ulyanovsk
- UMF Afturelding (W)
- UMF Samherjar
- UKS Lider Wloclawek
- US Castanet-Tolosan
- University of Western Cape (W)
- Unity FC
- University of Tasmania SC 2 (W)
- Universidad Cesar Vallejo Reserves
- USV Taucher-Erdbau Eggersdorf
- UCT (W)
- USV Hengsberg
- University of Queensland FC U23
- Utah Royals FC Arizona (W)
- United Soccer Alliance (W)
- UA Pando
- USC Sonnhofen
- USM Alger U19
- University Lublin
- UR Rzeszow
- UKW Bydgoszcz
- Uniao Rondonopolis MT U20
- Upstate Lonestar FC
- United Soccer Alliance
- Uzbekistan U17
- University of Fribourg
- University of Rouen