- Rotary International, World Headquarters
- Rotary of Western Johnson County
- Roto
- Rotoract Club
- Roundy's
- Routt County United Way
- Rowan Companies Inc.
- Rowan County United Way
- Rowan Regional Medical Center
- Rowan University
- Rowland Coffee Roasters Inc.
- Roxborough Memorial Hospital
- Royal American Services Inc.
- Royal and Sunalliance
- Royal Palms Hotel and Casitas, Phoenix, AZ
- RPM
- RPM International Inc.
- RRM Design Group
- RS and Mcgladrey
- RSH Architects
- RSI
- RSM McGladrey Inc.
- RSNA
- RT Lawrence Corporation
- RT Patterson Company, Inc.
- RTI Donor Services
- RTI Donor Services - Midwest Division
- RTZ Associates
- Rubber Manufacturers
- Rubbermaid Cleaning
- Rubicon
- Rubicon Health Technologies
- Rubin's Auto Repair
- Ruf Strategic Solutions
- Ruffin and Payne Inc.
- Ruffolo, Hooper and Associates, M.D., P.A.
- Ruiz Food Products Inc.
- Ruiz Mexican Foods, Inc.
- Rumford Hospital
- Rural Counties
- Rural Health Policy Center
- Rural Medical Services
- Rural-Metro Corp.
- Rush Foundation Hospital
- Rush University Medical Center
- Russell County Hospital
- Russell Medical
- Russellville Hospital
- Rutgers University
- Rutherford Family Healthcare, PA