Companies catalogue
- C L & N Co, Gormley
- CA Technologies, Markham
- CIBC Wood Gundy Oshawa Branch, Oshawa
- CLC Bookkeeping Services, Cambridge
- CONGLOMERATE CONSTRUCTION, Goodwood
- CPAP DIRECT LTD.-Scarborough, Toronto
- CRM Workshops Canada, Whitby
- CTR Sudbury Bandag, Sudbury
- Cadarackque School, Ajax
- Caduceon Environmental Laboratories, Richmond Hill
- Camp Riverwood, Markham
- Camp Riverwood, Markham
- Camp Wabikon, Toronto
- Canada First Academy for Soccer Excellence, Toronto
- Canada Toronto East Mission, Oshawa
- Canadian Institute For Health Information, Toronto
- Canadian Mobile Transmissions, Wahnapitae
- Canadian Multifaith Federation (formerly known as Ontario Multifaith Council), Toronto
- Canadian Parents For French, Toronto
- Canadian Sign Consultants, Pickering
- Canadian Tire, Sudbury
- Cancer Education Research Foundation, Markham
- Canterbury Place Retirement Residence, Toronto
- Captain George's Fish & Chips, Whitby
- Captain George's Fish & Chips, Whitby
- Cardan Contracting, Bowmanville
- Career Camp (for International Students), Toronto
- CareerNiche, Toronto
- Caribbean Colour Tanning Salon, Pickering
- Carruthers Creek Indoor Soccer Centre, Ajax
- Carwin Tax, Bowmanville
- Cash N Dash Financial, Oshawa
- Cathedral Bluffs Yacht Club, Scarborough
- Catholic Civil Rights League, Toronto
- Catholic Cross-Cultural Services, Toronto
- Caye Dive & Travel, Bowmanville
- Centennial College Residence & Conference Centre, Toronto
- Centennial Place Residence, Toronto
- Central Circulation, Ajax
- Centre For Sleep Disorders, Ajax
- Centre for Alternative Wastewater Treatment, Lindsay
- Centre for Vein Care, Ajax
- Ceramic Sculpture, Oshawa
- Chaco Swimming School, Toronto
- Champion Taekwondo, Markham
- Chandni Chowk Restaurant, Toronto
- Chartwell Avondale Retirement Residence, Toronto
- Chartwell Gibson Retirement Residence, Toronto
- Chartwell Guildwood Retirement Residence, Toronto
- Chartwell Parkway Retirement Residence, Pickering
- Chartwell Rouge Valley Retirement Residence, Markham
- Chartwell Valley Vista Retirement Residence, Vaughan
- Chathamson Tai Chi, Oshawa
- Chi in Nature, Markham
- Chick Fiesta (Peri Peri Good), Toronto
- Chimo Youth & Family Services, Port Perry
- Chin Yuan Pai Ku, Markham
- Chipotle, Toronto
- Chipotle Mexican Grill, Toronto
- Chopsticks Szechuan Chinese, Toronto
- Chopstix and rice( Bayview Wok), Richmond Hill
- Christel's Bookkeeping & Acctg, Hamilton
- Christian Gays, Oshawa
- Christian Horizons, Ajax
- Chrysalis Healing and Coaching, Toronto
- Chuck E. Cheese's, Toronto
- Church in the Park, Oshawa
- ClaimsPro Inc, Toronto
- Clarington Fields, Clarington
- Clarington Swim Club, Bowmanville
- Clarke Portable Sawmills, Lindsay
- Classic Global Ltd., Toronto
- Clear Connection Communication, Markham
- Cleveland Clinic Canada - Sport Medicine, Toronto
- Club Dynasty Ltd, Markham
- Coachlite Roller Gardens, Oshawa
- Collection Recovery Systems, Oshawa
- Colligur Inc., Toronto
- Collis & Reed Research, Bowmanville
- Collis Group Inc., Richmond Hill
- Columbus Golf & Country Club, Oshawa
- Complete Packaging Systems, Whitby
- Concwood Construction Inc., Ajax
- Cool Rays Tanning & Spray Tanning, Ajax
- Copper Cliff Automotive, Sudbury
- Corbett Creek Water Pollution Control Plant, Whitby
- Corner-Edge Products Ltd, Toronto
- Corrosion Free Zone, Sudbury
- Cosmetic Clinic, Filler, Botox, PRP, Thread Lift | Marco's Derma Care, Richmond Hill
- Country Style, Toronto
- Courtice Water Pollution Control, Oshawa
- Cowman's Construction, Whitby
- Crescent Oral Surgery, Toronto
- Crescent Oral Surgery, Richmond Hill
- Crosco Truck Shop Ltd, Sudbury
- Crowe's Mobile Road Service, Sudbury
- Crown Pastries, Toronto
- Curve Appeal, Oshawa
- Cutting Edge Pro Shop, Markham
- cabi/Sarah Hamelin Independent Stylist, Hampton