Organizers
- Reece's RoundUp
- Reedsburg Professional Police Association
- Reedsburg Triathlon
- Reedy Meadow Golf Course
- REEF RELIEF
- Rees Leisure
- Reeses Obstacle Course Series
- Reeses Obstacle Race
- Reeths Puffer Little League
- Reeths Puffer Youth Softball League
- Reflections Hospice
- Refresh Camp
- Refuge International
- Refugio Junior Lifeguards
- Regatta Run
- Regency Panthers
- Regency Sport and Health
- Regency Sports, Inc.
- Regent Soccer Club
- Regent Works
- Regents School of Austin
- Regina Miller Basketball Camps
- Regional Medical Center OB Services
- Regional Municipality of York
- Regis Soccer Academy
- Regis Soccer Camps
- Regis University
- Regis University Soccer
- Registrar Columbia Academy, LC
- Rehoboth Boarding School, LLC
- Reiche Community School
- Reidsville Parks and Rec
- Reidsville Parks and Recreation
- Reign Wrestling Club
- Reindeer Dash
- Reis Tennis Center
- Relay For Life Cancer Research UK
- Relay For Life of Pearl River County/Picayune
- Relay for Life of South Fayette / Bridgeville
- Relay Iowa
- Relentless Against Blood Cancers
- Relentless Lax
- Remembering Gunnar/CHD Awareness/PBCC
- Remembering Our Babies
- Remiremont VTT
- REMSA
- Renaissance Knights Chess Foundation
- Renaissance Youth, LLC
- rendezvous mountain hillclimb
- Renegade Playground Challenge
