- Keystone Novelty Co
- Keystone Pain Institute
- Keystone Printing Co
- Keystone Radiator & Air Cond
- Keystone Rehabilitation Systs
- KFC
- KFC
- Kimmen Plumbing & Heating Inc
- King's Jewelry
- King's Remodeling
- Kings Family Restaurants
- Kirkland's
- Kitchen & Gift
- Klesius & Sheedy
- Klobetanz Ecowater Systems
- Kmart
- Kneppy's Firework
- Knickerbocker Tavern
