Companies catalogue
- O'Dell Associates, Waterloo
- O'Dell Associates Inc, London
- OCG Commercial Interiors, Kitchener
- OCTOPUZ Inc., Waterloo
- OJB industries, Lucan
- OK Tire, Baden
- OK Tire, London
- OM Aromatherapy & Essential Oils, London
- OMM Roofing & Construction, Kitchener
- ON Communication Inc, London
- ONmetrics, London
- OVer Collective, London
- Oak Bridge Properties, Kitchener
- Oakes Welding Brantford Limited, Brantford
- Oakhill Urban Market, Brantford
- Oakridge Barbers, London
- Oakridge Collision Centre, London
- Oakridge Ford Sales, London
- Oarbs Software Corporation, Waterloo
- Oceansoft Water Systems Inc / Softener Repair & Rentals Kitchener Ontario, Wilmot
- Off Road Addiction, Saint Thomas
- Off The Map Adventures Ltd, Kitchener
- Office Link Group Inc, Woodstock
- Office To Go, London
- Officetrax, Kitchener
- Ofner's Auto Sales, London
- Oh Travel Inc, Kitchener
- Ohmz Auto Sales, Middlesex Centre
- Old East Village Vinyl, London
- Old Navy, London
- Old Navy, London
- Old North Wellness Center, London
- Old Oak Chest, Saint Thomas
- Old Skool Kool, Brantford
- Olfactive Inc, Cambridge
- Olofsfors Inc, Brantford
- Olszowy Anthony J, Brantford
- Olympia Tile, London
- On Side Restoration Services, Kitchener
- On Stage Dance Studio, Stratford
- On Track Door Systems, Guelph
- On-Site Maintenance, Kitchener
- On-Site Mobile Weld & Repairs, Kitchener
- On-Site Mobile Welding & Repairs, Kitchener
- Once Upon A Child, London
- One Eleven Registered Massage Therapy, Kitchener
- One Percent Realty Ltd Brokerage - Kitchener, Kitchener
- One Stop Plumbing, Kitchener
- Onelia's Hair Boutique, London
- Onespot Allergy, London
- Onkar Foods & Spices Inc, Kitchener
- Ontario Cattle Feeders' Association & Ontario Corn Fed Beef Program, London
- Ontario Clean Water Agency, Stratford
- Ontario Federation Of Agriculture, Guelph
- Ontario Federation-Agriculture, Guelph
- Ontario Green Solutions, Waterloo
- Ontario Home Health, Stratford
- Ontario Processing Vegetable Growers, London
- Ontario Real Property Reg, Kitchener
- Ontario SEO, London
- Ontario Swine Improvement, Innerkip
- Ontario Tank & Trailer Ltd, Kitchener
- Ontario West Insurance Brokers, London
- Ontor Limited, Cambridge
- Onward Manufacturing Company Limited, Waterloo
- Open Storage Solutions, London
- Openlink Agtech, Kitchener
- Opolko John, Kitchener
- OptiTech Eyewear, Kitchener
- Optical House, Kitchener
- Opus Hair Studio, London
- Opus II, Kitchener
- Orangetheory Fitness Waterloo, Ancaster
- Oriental Mart (Hanul Food Inc.), London
- Oro Salon, Waterloo
- Orv's Collision & Automotive Center, London
- Orzech Heating & Cooling, London
- Osborne Connie RMT, Kitchener
- OshKosh B'gosh, London
- OshKosh B'gosh, London
- OshKosh B'gosh, London
- OshKosh B'gosh, London
- OshKosh B'gosh, Saint Thomas
- Ottawa Hair Stylists, Kitchener
- Ottawa South Optometry, Kitchener
- Otter Be Here, Aylmer
- Outspokin Cycles, London
- Overture Investments, Kitchener
- Owen Bauman Firewood, Wallenstein
- Owen Homes, Waterloo
- Ox and Bow Barbershop Inc., London
- Oxford Barber Shop, London
- Oxford Barber Shop, London
- Oxford Book Shop Ltd, London
- Oxford County Pontoon & Powersports Inc., Ingersoll
- Oxford Dodge Chrysler (1992) Ltd., London
- Oxford Marine & RV Trim, Woodstock
- Oxford Motors, London
- Oxford Sand & Gravel Ltd, Woodstock
- onePM Associates, London