- Flowserve Corp
- Foreign Auto Parts Pittsburgh
- Foremost Auto Inc
- Four Seasons Landscape Mgmt
- Fox & Dole Technical Sales
- Frederick J Palmer & Assoc
- Fryer Monument Co
- Furry Friends
- G & S Signs
- G E Co
- GAC King Buffet
- Gallina & Sons
- Gates Rubber Co
- Gateway Sales Inc
- GE Bridgeville Glass
- GE Co GE Fanuc Automation
- GE Ionics Inc
- Gelman Appraisal Svc
- General Anesthetic Svc Inc
- Giant Food
- Giant Food
- Giffin Interior & Fixture Inc
- Giffin Interior & Fixture Inc
