- Radisson Poco Diablo Resort, Sedona AZ
- Radisson Resort and Spa Scottsdale, Scottsdale AZ
- Radisson Woodlands Hotel, Flagstaff, AZ
- Raytheon Missile Systems
- Residence Inn Tucson, Tuscon AZ
- Royal Palms Hotel and Casitas, Phoenix, AZ
- Rural-Metro Corp.
- Saint Josephs Hospital and Medical Center
- Salt River Project
- Santa Cruz County Board of Supervisors
- Santa Cruz County Recorder
- Santa Cruz Valley Regional Hospital
- Schuck and Sons Construction Co.
- Science Care
- Scottsdale Convention and Visitors Bureau
- Scottsdale Healthcare Thompson Peak Hospital
- Scottsdale Healthcare-Osborn
- Scottsdale Insurance
- Scriptsave
- Select Specialty Hospital - Phoenix
- Shamrock Foods
- Sheraton Phoenix East Hotel and Convention Center, Mesa
- SHPS
- Sierra Suites, Sierra Vista, AZ
- Simmons Manufacturing
- SMACTIP
- SOD University of Arizona
- Southern Arizona VA Health Care System
- Southwest Cable Communications Association
- Southwest Gas
- Southwest Valley YMCA
- Southwestern Eye Center
- Spiral Inc.
- St. Clare of Assisi Roman Catholic Church
- St. Joseph's Hospital and Medical Center
- St. Luke's Medical Center
- St. Luke's Medical Center and Tempe St. Luke's Hospital
- St. Peter's Episcopal Church
- Stanley Consultants, Inc. - Phoenix
- Star Buffet, Inc
- State Farm Insurance
- State of Arizona
- STMicroelectronics
- Summit Healthcare Regional Medical Center
- Sun Health
- Sun Health Care Center
- Sunnyside Unified School District
- Sunset Ridge Elementary
- Superior Court of Arizona - Maricopa County
- Superior Court Pinal County