| ADAPT Halton, Problem Gambling & Behavioural Addictions Services | Halton Region |
| Al-Anon Family Groups, Halton Hills and Milton, Al-Anon and Alateen Meetings | Halton Hills |
| Al-Anon Family Groups, Hamilton / Burlington, Al-Anon / Alateen Meetings | Burlington |
| Al-Anon Family Groups, Oakville, Al-Anon / Alateen Meetings | Oakville |
| Al-Anon Family Groups, Al-Anon Family Groups, Ottawa - Canadian Headquarters | Ottawa |
| Alcoholics Anonymous, Oakville - Halton District Office, Halton Area Meetings | Halton Region |
| Alcoholics Anonymous - North Halton/Erin, North Halton / Erin District, Erin and Area Meetings | Erin |
| Alcoholics Anonymous (GTA), Find an Alcoholics Anonymous Meeting - Greater Toronto Area Intergroup | Ontario |
| Alcoholics Anonymous Hamilton, Alcoholics Anonymous Meetings | |
| Centre for Addiction and Mental Health, Youth Vaping, Alcohol, Substance Use and Technology Dependence Program | Toronto |
| Cocaine Anonymous | Toronto Downtown Central |
| Debtors Anonymous, Oakville - Mailing Address | Oakville |
| Families for Addiction Recovery, Peer Support Services | Toronto |
| Gamblers Anonymous, Compulsive Gambling Support Services | Vaughan |
| Hope Bible Church Oakville, Recovery Group | Oakville |
| Moderation Management | Ontario |
| Nar-Anon Family Groups, Halton Meetings | Halton Region |
| Narcotics Anonymous | Halton Region |
| Native Horizons Treatment Centre | New Credit |
| Overeaters Anonymous, Oakville / Burlington Area Meetings | Burlington |
| Sex and Love Addicts Anonymous, Ontario Intergroup - Mailing Address | Toronto |
| South Asian Canadians Health and Social Services, SACHSS Mental Health Services | Brampton |
| Wesley, Hoarding Support Services – Halton | Halton Region |
