- Grease Monkey
- Great Beginnings Child Care
- Great Lakes Cold Storage
- Greater Pittsburgh Frame & Art
- Greater Pittsburgh Med Assoc
- Greater Pittsburgh Med Assoc
- Greater Pittsburgh Orthopaedic
- Greater Pittsburgh Physical
- Green Acres Furniture LTD
- Greene Enterprises
- Greg E Betant Inc
- Greg Miller & Assoc
- Gregory A Johns Inc
- Gregory M Semashko DDS
- Gregory R Karabin DDS