- Farmers Cooperative Association, Inc.
- Farmers State Bank
- Farmland Foods, Inc.
- Federal Mogul Ignition Products
- First American Bank
- First Community Bank
- First Federal Bank
- First Iowa State Bank
- First National Bank
- First National Bank Midwest
- First National Bank, Fairfield
- First Security Bank and Trust
- First State Bank
- First Whitney Bank and Trust
- Fisher Controls
- Fleetguard, Inc.
- Flexsteel Industries, Inc
- Floyd County Medical Center
- Floyd County Memorial Hospital
- Floyd County Sheriff's Office
- Floyd Valley Hospital
- Fort Madison Community Hospital
- Franklin General Hospital
- Gambro Healthcare
- Garst Seeds
- Gavilon Grain, Creston
- Gelita North America
- General Electric Co.
- Genesis Health System
- Genesis Medical Center
- Genesis Medical Center, DeWitt
- George C. Grape Community Hospital
- Georgia-Pacific Corp.
- Glacier Daido
- GO Cedar Rapids
- Gomaco Corp.
- Great River Health System
- Greater Des Moines Convention and Visitors Bureau
- Greater Iowa Credit Union
- Greater Regional Medical Center
- Green Belt Bank and Trust
- Greene County Hospital
- Griffin Pipe Products Co.
- Grimm Brothers Plastics
- Grinnell Regional Medical Center
- Grinnell State Bank
- Grundy County Memorial Hospital
- Gundersen Palmer Lutheran Hospital and Clinics
- Guthrie County Hospital
- Guttenberg Municipal Hospital