| Ray Pharmacy | Oakville |
| Real Canadian Superstore DRUGStore Pharmacy, Georgetown, Services pharmaceutiques | Halton Hills |
| Real Canadian Superstore DRUGStore Pharmacy, Milton, Services pharmaceutiques | Milton |
| Real Canadian Superstore DRUGStore Pharmacy, Oakville, Services pharmaceutiques | Oakville |
| Real Estate Council of Ontario | Toronto |
| Rebecca Medical Walk In Clinic, Clinique sans rendez-vous | Oakville |
| Registered Massage Therapists' Association of Ontario | Etobicoke |
| Regroupement canadien d'aide aux familles des détenu(e)s | Kingston |
| Remedy'sRx Pharmacy, Oakville - Chemin Lakeshore Est (Madill Health Aid Pharmacy), Services pharmaceutiques | Oakville |
| Renewed Computer Technology, RCTech OUTREACH | Mississauga |
| Réseau canadien autochtone du SIDA | B-Say-Tah (Resort village) |
| Rexall Pharmacy, Milton - Chemin Derry Ouest, Services pharmaceutiques | Milton |
| Rexall Pharmacy, Oakville - Chemin Lakeshore Ouest, Services pharmaceutiques | Oakville |
| Rexall Pharmacy, Oakville - Chemin Maple Grove, Services pharmaceutiques | Oakville |
| Rexall Pharmcy, Acton - Rue Queen Est, Services pharmaceutiques | Halton Hills |
| River Glen Pharmacy, Services Pharmaceutiques | Oakville |
| River Oaks Medical Pharmacy, Services pharmaceutiques | Oakville |
| Rogers Branché sur le succès | Toronto |
| Routes Adventures | Kingston |
| Royal College of Dental Surgeons of Ontario | Toronto Centre-ville Nord |
