- Cirque Italia
- CrimeCon
- Channel Audio
- Category 12 Beer
- Chinatown Fair Family Center
- Compass Realty
- Charleston Coast Vacations
- Cheshire Rio
- Caarbon
- Chris Cornell
- Charles Tolliver
- Chaotic Harmony
- Chicago Party Bus
- Club Chi Town Limo
- Cadillac Ranch
- City Iconic
- Cressida Glassware
- Cafe El Meson
- Chicago's Pita Grill
- Cafe Bella
- Coming Attractions
- Canby Cinema 8
- City Lights Cinemas
- Chookhare & Sons
- Classic Tuxedo
- Camille's Sidewalk Cafe
- Crave Catering
- Corporate Caterers
- CoSeats
- Cash Back Hotel Club
- Cuba Hostel
- Chi-Chi's Pizza
- Cowboy John Tours
- CheapTravelHunter.com
- Cupcake
- Cleveland Heath
- Claddagh Irish Pub
- Catrinka
- Ceocase
- CoverBee
- Carlsbad Seapointe Resort
- Custom Accessories Garters
- Coco and Kiwi
- C.L. Whiting
- Carianne Moore
- Carpet Bags
- Candy Woolley
- Color Dunes
- Corroon
- Crapchute Bags
- Code 10
- Cape Cod Leather
- Cheap Shore Trip
- Chew Philly Food Tours
- Chicago Savvy Tours
- Chicago Brew Bus
- Community Day Event
- China Expedition Tours
- City Break Safari
- CVPS Solutions
- Casa Artelexia
- Copley Art & Framing
- Czech Poster Gallery
- ClipperJet
- Cab Share Canada
- Chicago Pizza Tours
- C3 Conference 2012
- Conference Hound
- Cosyspeed
- Car Rental Agent
- California Botanic Garden
- Common Sense Cases
- Cheer Luggage
- Cape Symphony Orchestra
- Capital Philharmonic Orchestra
- Chicago Arts Orchestra
- Cincinnati Chamber Orchestra
- Columbus Symphony
- Columbus Indiana Philharmonic
- Central Pennsylvania Festival of the Arts