Organizers
- Round Rock Tennis Association
- Round Valley Run
- Roundhouse Aquarium - Oceanographic Teaching Stations
- RoundTripper Baseball Academy
- RoundTripper Sports Academy
- Rovers
- Rovers International Soccer
- Row Abroad
- Rowdie Katz
- Rowing Dock
- Rowlett Chamber of Commerce
- Roxbury Soccer Club
- Royal Academy Soccer and Old Brooklyn Soccer
- Royal Bermuda Yacht Club
- Royal Marines Charitable Trust Fund
- Royal New Kent
- Royal Oaks Country Club
- Royal Racing LLC
- Royal Sporting Group
- Royal Vista Golf Club
- Royalty Sports complex
- Royce Brook Golf Academy
- Roycemore School
- RPUS Walk
- RRXFitness 1st Annual Stride For Life 5k - benefiting St.Jude Children's Research Hospital
- RSG1 Foundation
- RSPCA NSW
- RSPCA Queensland
- RSPCA SA
- RSPCA Tasmania
- RSPCA Victoria
- RSPCA Western Australia
- RSU 5 Recreation & Community Education
- RSU 5 Recreation and Community Education
- RT Events
- RT SPORTS
- RTaylor Golf
- Rubick Run
- RUBICON RACE
- Rubio Long Snapping
- Ruble Triathlon
- Ruby Hill Aquatics
- Rudi Foundation
- rudyard lions
- Rudyard Pool Committee
- Ruffin McNeill Football Camp LLC
- RUFIT
- Rufus Racing
- Rugby & Northampton AC
- Rugrats Soccer Club
