- Countertop store
- Construction equipment supplier
- Computer software store
- Computer support and services
- Computer service
- Computer hardware manufacturer
- Computer club
- Copying supply store
- Custom tailor
- Courier service
- Childrens store
- Camera repair shop
- Costume rental service
- Crêperie
- Corporate campus
- Concert hall
- Construction and maintenance office
- Clothing alteration service
- Costume jewelry shop
- Company