Organizers
- UK Athletics - Softball
- UK Athletics - Swim & Dive
- UK Athletics - Tennis
- UK Athletics - Volleyball
- UK Boys Soccer Tour
- Uke Crazy
- UL Lafayette Baseball
- UL Lafayette Football
- UL Lafayette Men's Basketball
- UL Lafayette Men's Tennis
- UL Lafayette Soccer
- UL Lafayette Softball
- UL Lafayette Track & Field
- UL Lafayette Women's Basketballl
- UL Rec Sports
- Ulbfit
- Ulman Cancer Fund Events
- Ulster Fillies
- Ulster Fillies 845-339-2072
- Ulster Project Delaware
- Ulster University
- UlsterCorps
- Ultimate Adventures Limited
- Ultimate Combatant, LLC
- Ultimate Dog Sledding Experience
- Ultimate Fun Run
- Ultimate Goalkeeper Academy
- Ultimate race management
- Ultimate Racing Inc.
- Ultimate Santa Run
- Ultm8 Warrior
- Ultra X
- ULTRAFIT-USA
- UltraFit-USA
- UltraFit-USA Inc.
- Ultraman Florida
- Ultraman World Championships
- Ultramax Sports
- UM Western/ Beaverhead Trails
- Um Western/BCHS
- UMaine 4-H Centers
- UMaine American Fisheries Society Student Subunit
- Umami Running Events
- UMATSA
- Umbrella
- UMHB Softball Camps
- UMKC Conservatory Academy
- UMKC Conservatory Academy of Music and Dance
- UMMC- Gynecologic Oncology
- Umpire Hockey
