- USC SCORE
- USC TeleCARE
- USDFit
- Use Vida
- USERGuideMuc
- USK Karate
- USleep
- USMC Squad Bay
- USMMA
- USPSTF Prevention TaskForce
- USRK Kata Counter
- USSF – High Performance
- USSF/USAF PFA Calculator
- USTA GEORGIA STATE CHMPS
- Ustazk – أستاذك
- Usual Diet
- USWC Taekwondo Tri-Cities
- UT Recreational Services
- UT-Tyler RecSports
- UTA Campus Rec Go
- Utah Junior Golf Association
- Utah PGA Junior Series
- Utah Section PGA
- UTD Benefits Fair
- UTD Benefits Fair
- UTI AUX
- Utmattningshjälpen
- Utopia Beauty
- Utopia Beauty Rooms
- Utopia Hair Salon
- Utrechtse Tennis Organisatie
- UTRO
- UTSW Radiology App
- UUHIPMembers
- UUnity Studio
- UV - Ultraviolet
- UV Derma
- UV Index - App
- UV Index Now - UVI Mate
- UV Index Widget - Worldwide
- UV-INDEKS
- UV-Shield
- UVA IM-Rec Sports
- UVA's Student Flourishing App
- UVCeed
- UVConcierge
- UVee Control
- UVLens - UV Index
- Uvo Health Telemedicine
- UVScan
- UVSL
- UVT Fitness Club
- UV Forecast - Check UV Index
- UW Health Sports Performance
- Uw LIJF
- UW Recreation
- Uw Zorg online
- UW-La Crosse Rec Sports
- UW-Platteville Campus Rec
- UW-River Falls Campus Rec
- UW-W Rec Sports
- UWE Sport
- UWEC Recreation
- UWM UREC
- UWO Student Rec
- UWSP IM
- Uzeli Know
- Uzman Psikoloji: Online Terapi
- Uzmanlık Eğitimi Takip Sistemi
- U居服