| I.D.A. - Brampton - Brampton Hospital Pharmacy, Bramalea Rd | Brampton |
| I.D.A. - Brampton - Charolais Pharmacy, 305 Charolais Blvd | Brampton |
| I.D.A. - Brampton - Mayfield Pharmacare, 3068 Mayfield Rd | Brampton |
| I.D.A. - Brampton - North Park Pharmacy, 860 North Park Dr | Brampton |
| I.D.A. - Brampton - Queen Street Pharmacy, 79 Queen St W | Brampton |
| I.D.A. - Brampton - Saint Peter Pharmacy, 20 Rambler Dr | Brampton |
| I.D.A. - Etobicoke, Albion Finch Pharmacy - Finch Ave | Etobicoke North |
| I.D.A. - Etobicoke, Islington Pharmacy - 2428 Islington Ave | Etobicoke North |
| I.D.A. - Shelburne, Caravaggio Drugs - Main St | Shelburne |
| I.D.A. - Woodbridge, Innovation Pharmacy - Innovation Dr | Woodbridge |
| I.D.A. Pharmacy - Etobicoke - Rexdale Blvd, (Rexdale Medical Pharmacy) | Etobicoke North |
| I.D.A. Pharmacy- Brampton -, 4515 Ebenezer Rd (Gore) | Brampton |
| iCARE Home Health Services | Oakville |
| ICNA Relief Canada, IRC Resource Centre Mississauga, Muslim Family Services | Mississauga |
| IDA Battleford Pharmacy | Mississauga |
| IDA Pharmacy, Dundas St W | Mississauga |
| IDA Pharmacy, Mississauga - Derry Rd W | Mississauga |
| IDA Pharmacy, Mississauga - Queen St S | Mississauga |
| IDA Pharmacy, Sainte Barbara Blvd | Mississauga |
| IDA Pharmacy / Adapt Home Health Care, Mississauga (Woodland) | Mississauga |
| IDA Pharmacy-Mississauga, Carl's Pharmacy | Mississauga |
| IDA Rathburn Pharmacy | Mississauga |
| iHealth Care Primary Medical Care | Mississauga |
| iHealthCentre | Woodbridge |
| Imo's Sunnyside Home | Brampton |
| Indus Community Services, Adult Day Services, Matheson site | Mississauga |
| Indus Community Services, Brampton Branch Office | Brampton |
| Indus Community Services, Brampton Queen Street Site - Adult Day Services | Brampton |
| Indus Community Services, Caregiver Support Group and Friendly Visiting Program | Brampton |
| Indus Community Services, Employment Services, Mississauga Office | Mississauga |
| Indus Community Services, English Language Training, LINC, Mississauga Office | Mississauga |
| Indus Community Services, Head Office, Mississauga | Mississauga |
| Indus Community Services, Health Services, Seniors Wellness Program | Brampton |
| Indus Community Services, Newcomer Services, English Language Training (LINC) | Brampton |
| Infant and Child Development Services Peel | Mississauga |
| Infertility Network | Toronto |
| Infinite Residential Cleaning Services | Orangeville |
| In-Form Physiotherapy and Rehabilitation Centre | Woodbridge |
| Information Oakville | Oakville |
| Inglewood Schoolhouse Performers | Inglewood |
| Insight Diagnostic Imaging, Mississauga Diagnostic Imaging & Breast Centre | Mississauga |
| Integrating Loss | Orangeville |
| Interim Place, Community Support & Outreach (THSP) | Mississauga |
| Interim Place, Mississauga | Mississauga |
| International Credential Assessment Service of Canada | Guelph |
| IODE Canada, Halton Peel Chapters | Mississauga |
| Iona Doctors Clinic | Mississauga |
| Islamic Private Board of Education (Ont), Al-Iman School | Brampton |
| Islington Medical Centre | Etobicoke |
| Italian Cultural Centre, Brampton | Brampton |
| Ivan Franko Homes, Assisted Living/Retirement Residence | Mississauga |