- Coastal Farm and Ranch
- Coastal Federal Bank
- Coastal International
- Coastal Mart
- Coastal Realty
- Coastal Transport
- Coastline Distribution
- Coastwide Laboratories
- Cobbler Shop
- Cobbler's Bench
- Cobblers Corner
- Cobblestone Apartments
- Cobblestone Quality Shoe Repair
- Coborns
- Cochise Health Alliance
- Coconuts
- Coconuts Music & Movies
- Coconuts Music & Video
- Coco's
- Coco's Bakery
- Coffee Bean & Tea Leaf
- Coffee Beanery
- Coffee Break
- Coffee Cafe
- Coffee Connection
- Coffee Corner
- Coffee Cup
- Coffee Cup Cafe
- Coffee Express
- Coffee Grinder
- Coffee Grounds
- Coffee House
- Coffee Mill
- Coffee Pot
- Cogdell Group
- Cognigen
- Cognisa Security
- Co-Go'S
- Cohen Fashion Optical