- Grubb and Ellis Harrison and Bates
- Grundy County Memorial Hospital
- GSA, FSS, GFEE
- GSE Construction Company, Inc.
- GSI, Commerce, Inc.
- GTSI Corp.
- Guadalupe County United Way
- Guam Communications Network
- Guardian Elite Medical Services, LLC.
- Guardian Life Insurance Company of America
- Guerbet
- Guest Services, Inc.
- Guidant
- Guidant
- Guide Dog Foundation
- Gulf Coast
- Gulf Coast Medical Center
- Gulf Coast Regional Blood Center
- Gulf Coast Regional Medical Center
- Gulf County Board of County Commissioners
- Gulf Power
- Gulf South Medical Supply
- Gulfsteam
- Gullwing Beach Resort- Sunstream Hotels and Resorts
- Gum Moon Women's Residence and the Asian Women's Resource Center
- Gumenick Properties
- Gundersen Lutheran Medical Center
- Gundersen Palmer Lutheran Hospital and Clinics
- Gusman Automotive
- Guthrie Corning Hospital
- Guthrie Cortland Medical Center
- Guthrie County Hospital
- Guthrie Robert Packer Hospital
- Guthrie Towanda Memorial Hospital
- Gutierrez-Palmenberg, Inc.
- Guttenberg Municipal Hospital
- GVNW Consulting Inc
- Gwatney Chevrolet Co.
- Gwinnett Convention and Visitors Bureau
- Gwinnett County Medical Examiner's Office
- Gwinnett Medical Center - Duluth
- Gwinnett Medical Center - Lawrenceville
- H Betti Industries, Inc.
- H. John Heinz III Center for Science, Economics and the Environment
- H.C. Watkins Memorial Hospital
- H.E. Butt Grocery Co.
- H.J. Heinz Company
- H.J. Heinz Company Foundation
- H.J. Russell and Co.
- H.L.W. Fast Track Inc.