Organizers
- 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
- 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
- Renegade Racing
- Renew Missouri
- Reno Pop Warner
- Rensselaer Polytechnic Institute - Outreach Programs
- Renton School District #403
- RESCUE
- Rescue An Orphan Run
- Rescue Her
- Rescue Outreach Mission Of Central Florida
- Rescue Ranch
- Rescue Site Services Inc.
- Rescue the Animals
- RescueMe Foundation, Inc.
- Research Down Syndrome
- ReserveAgencySSUMonitoring
- Reservoir Boosters
- Reservoir High School Boosters
- Reservoir High School Boosters Camps
- Resolute Lacrosse
- Resolution 5K Run/Walk
- Resolution Run to Kick Cancer
