- Sutter Santa Rosa Medical Center
- Sutter Solano Medical Center
- Sutura
- Sylmar Conference Grounds
- Synagro
- Taft Chamber of Commerce - Bakersfield
- Taft Methodist Preschool - Bakersfield
- Tahoe Forest Health System
- Target Corp.
- TDS
- Teledyne
- Televideo San Diego
- Temecula Valley Hospital
- TeraRecon, Inc.
- The Crescent Hotel
- The Grande Colonial La Jolla
- The John Brockington Foundation
- The McClatchy Co.
- The Meeting Manager
- The National Association for Hispanic Elderly
- The New Otani
- Thurston Consulting
- Titan
- TNT
- Torrance Memorial Medical Center
- Toshiba
- Tramultola
- Transplant Communications, Inc.
- Travel Planners, Inc.
- Travelocity.com
- Tri County Dental Association
- Tri-City Medical Center
- Tulare Regional Medical Center
- UC Davis Health System
- UC Davis Medical Center
- UC Irvine Medical Center
- UC San Diego Health System
- UCI Health - Lakewood
- UCI Health - Los Alamitos
- UCL Fielding School of Public Health
- UCLA Conferences and Catering
- UCLA Department of Psychology
- UCLA Medical Center
- UCLA Medical Center, Santa Monica
- UCLA School of Dentistry
- UCLA West Valley Medical Center
- UCSD Jacobs Medical Center
- UCSD Medical Center
- UCSD Medical Center Hillcrest
- UCSD School of Medicine