- Frontier Cooperative
- Frontier Motel
- Frontier Motors
- Froots
- Frost Insurance Agency
- Frosty Mug
- Fruit Basket
- Frullati Cafe
- Fruth Pharmacy
- Fry's
- Fry's Food
- Fry's Food & Drug Stores - Tucson- Pharmacy
- FSC Securities Corporation
- Fuchs Lubricants
- Fuddruckers
- Fudge Factory
- Fudgery
- Fuel
- Fuel Mart
- Fuji Japanese Restaurant
- Fujicolor Processing
- Full Circle
- Full Gospel Assembly of God
- Full Gospel Lighthouse
- Full Gospel Temple
- Full Moon
- Full Moon Saloon
- Full Size Fashions
- Fuller Brush
- Fuller Brush Independent Distributor
- Fuller Brush Products
- Fulton Bank
- Fun Factory
- Fun House
- Fun in the Sun
- Fun N Games
- Fun Zone
- Funcoland
- Fundamentals