| AIDS Network (The), Halton | Oakville |
| Halton. Halton Region Health Department, Acton, Sexual Health Clinic | Acton |
| Halton. Halton Region Health Department, Burlington, Sexual Health Clinic | Burlington |
| Halton. Halton Region Health Department, Exchange Works - Needle Exchange and Naloxone Distribution | Burlington |
| Halton. Halton Region Health Department, Georgetown, Sexual Health Clinic | Georgetown |
| Halton. Halton Region Health Department, Milton, Sexual Health Clinic | Milton |
| Halton. Halton Region Health Department, Oakville, Sexual Health Clinic | Oakville |
| HIV/AIDS Resources and Community Health | Guelph |
| Moderation Management, Toronto West | Oakville |
| Ontario. Ministry of Health, No physical address, Sexual Health Infoline Ontario/The Mainline | Toronto Downtown |
