- Easter Seals Greater Houston
- EC Power Inc.
- Edinburg Regional Medical Center
- Edinburg Regional Medical Center - Edinburg Children's Hospital
- El Paso County Medical Society
- Embassy Suites Dallas Love Field
- Embassy Suites, Dallas D-FW North)
- Encompass Rehabilitation Hospital of Arlington
- Encompass Services
- Engineering Diagnostics Inc.
- Enterprise Advisory Services Inc. EASI)
- Ergos Technology Partners Inc.
- Esoterix, Inc.
- Ethicon, Inc. A Johnson and Johnson Company
- Evelyn Rubenstein Jewish Community Center of Houston
- Examination Management Services, Inc.
- Exxon Mobil Corporation, Corporate Headquarters
- Fairfield Inn Dallas-Stemmons Freeway
- Fairfield Inn Houston I-10 East
- Fairfield Inn Houston-New the Galleria
- Family Child Development Club, Steven F. Austin State University
- Fort Worth Convention and Visitors Bureau
- Fort Worth Convention Center
- Foundation of Meeting Professionals International
- Futron Corp.
- FYI-Net LP
- Galleria Chamber of Commerce
- Galveston Island Convention and Visitors Bureau
- Gateway to Care
- GB Tech Inc.
- GenCure
- General Services Co
- Geometrica Inc.
- Glen Rose Medical Center
- Global Santa Fe
- Gonzales Labor Systems, Inc.
- Grace First Baptist Church
- Grace Presbyterian Village
- Graham Area United Way
- Grant Harrison Advertising LLC
- Grant Prideco Inc.
- Grapevine Texas Convention and Visitors Bureau
- Greater Ennis United Way
- Greater Houston Builders Association
- Greater Houston Convention and Visitors Bureau
- Greater Southwest Houston Chamber of Commerce
- Greensheet
- Grey Wolf Inc.
- Greystone.Net
- Griffin's Liberty Pharmacy