Companies catalogue
- O'Berge Du Village, Magog
- O-volt, Sherbrooke
- ONCAN LIMO SERVICE INC, Cambridge
- Oak Lane Cottage, St. Catharines
- Oakgroup Automotive Corporation, Mississauga
- Oakridge Public School, St. Catharines
- Oakville Assembly Complex, Ford Motor Company of Canada, Limited, Dearborn
- Oakville Fareshare Food Bank, Oakville
- Oakville Finishing Plant, Malvern
- Oakville Masonic Temple, Oakville
- Oakville Speech Clinic, Oakville
- Oatey Canada Inc, Cleveland
- Observatoire Astronomique Pandora, Sherbrooke
- Ocdia, Sherbrooke
- Oculo Vision, Sherbrooke
- Office Municipal D'Habitation De Sherbrooke, Sherbrooke
- Office Municipal D'Habitation De Stoke, Stoke
- Office Municipal Windsor, Windsor
- Office Municipal d'Habitation de Magog, Magog
- Office of the Registrar, Sherbrooke
- Ogddast Inc, Waterloo
- Ogden Granite Ltd, Ogden
- Old Town Country Landing Bed & Breakfast, Niagara-on-the-Lake
- Old Town Memories Bed and Breakfast, Niagara-on-the-Lake
- Olee's Ale House, St. Catharines
- Oleum Technologies Inc, Sherbrooke
- Olij Law, Smithville
- Olivier Stephanie Docteur, Sherbrooke
- Olympic Honda, Guelph
- Omaterra, le Grand spectacle de l'eau, Sherbrooke
- Omerville Municipalite Office, Magog
- On Demand Staffing, Welland
- On The Marc Pizza, St. Catharines
- On The Marc Pizza, St. Catharines
- On the Twenty Restaurant, Lincoln
- Onsite Flu Shots - ParaMed, St. Catharines
- Ontario Clean-All, St. Catharines
- Ontario Hospital Association, Toronto
- Ontario Labour, St. Catharines
- Ontario Library Service, Pelham
- Ontario March Of Dimes, St. Catharines
- Ontario Pharmacists Association, Toronto
- Ontario Public Supervisory Officials Association, Oakville
- Ontario Tender Fruit Producers Marketing Board, St. Catharines
- Ontario Weimaraner Rescue and Assistance, St. Catharines
- Ontario Wire And Cable Inc, Mississauga
- Ontarios First, Secondary Butcher Shop, Guelph
- Open Arms Mission, Welland
- Operations Springboard, St. Catharines
- Options Pregnancy Centre Lennoxville, Sherbrooke
- Options Prenancy Centre Lennoxville, Sherbrooke
- Optiprix Sherbrooke, Sherbrooke
- Opto-Réseau Lennoxville, Sherbrooke
- Opto-Réseau Sherbrooke Est, Sherbrooke
- Opto-Réseau Sherbrooke Ouest, Sherbrooke
- Opto-Réseau Windsor, Windsor
- Optoplus Sherbrooke, Sherbrooke
- OraCare Dental, St. Catharines
- Orchard Creek Fellowship, Thorold
- Orchard House Gourmet, Guelph
- Orchard Orthodontics, Pelham
- Orchard View Apartments, Lincoln
- Orchard View Bed & Breakfast, Niagara Falls
- Orchestre symphonique des jeunes de Sherbrooke, Sherbrooke
- Orchid Dental Ceramics, Niagara-on-the-Lake
- Orford 3.0, Orford
- Orford Express Tourist Train, Magog
- Orford Usine D'Epuration, Orford
- Organize 4 You, Oakville
- Orian Rugs Canada Ulc, Anderson
- Orientation Yoga, Sherbrooke
- Original Foods Limited, Dunnville
- Orrton Lodge, St. Catharines
- Orthodontistes Lemay, Sherbrooke
- Orthèse-Prothèse I.P.D.S, Magog
- Orthèse-Prothèse Memphrémagog, Magog
- Orthèse-Prothèse Rive Sud Inc, Sherbrooke
- Oryan Catering, Guelph
- Osborne Law Group, St. Catharines
- Oser bouger !, Sherbrooke
- Osmose Enr, Sherbrooke
- Osteoporosis Canada Niagara Chapter, St. Catharines
- Ostéopathie Caroline Bellerive, Saint-Denis-de-Brompton
- Ostéopathie Mylène Groulx, D.O., Sherbrooke
- Ostéopathie Sherbrooke, Sherbrooke
- Ostéopathie Équivive, Sherbrooke
- Our Moments Magiques, Orford
- Out & About Clinic, St. Catharines
- Outfitter United Mac, Saint-Théodore-d'Acton
- Oven Ready Products, Guelph
- Over Easy, Toronto
- Overholt Orchards Inc., St. Catharines
- Overnight Inn, Niagara Falls
- Owl's Head, Mansonville
- Owl's Head, Mansonville
- Owl's Head Golf Club, Mansonville
- Owl's Head Ski & Golf, Mansonville
- Oxford Learning Oakville South, Oakville
- Oxford Little Readers Academy, St. Catharines
- oddBird., St. Catharines