|
| Elgin County |
 | Addiction Services of Thames Valley - St Thomas Office (Ontario Works) | | |  | |
| Addiction Services of Thames Valley - St Thomas Office (Ontario Works) - Substance Abuse Services - Assessment | |  | | |
| Addiction Services of Thames Valley - St Thomas Office (Ontario Works) - Substance Abuse Services - Treatment | | | | |
| Addiction Services of Thames Valley - St Thomas Office (Talbot House) | | | | |
| Elgin Counselling & Mediation Centre | | | | |
| MADD Canada - St Thomas Chapter |  | | | |
| St Thomas Police Services | | | | |
| West Elgin Community Health Centre - Mental Health Services | | | | |
|
| Huron County |
| Choices For Change: Alcohol, Drug & Gambling Counselling Centre - Clinton Outreach Office | | | | |
| Choices For Change: Alcohol, Drug & Gambling Counselling Centre - Exeter Outreach Office | | | | |
| Choices For Change: Alcohol, Drug & Gambling Counselling Centre - Goderich Outreach Office | | | | |
| Choices For Change: Alcohol, Drug & Gambling Counselling Centre - Seaforth Office | | | | |
| Choices For Change: Alcohol, Drug & Gambling Counselling Centre - Wingham Outreach Office | | | | |
| MADD Canada - Huron-Bruce County Chapter | | | | |
|
| London |
| Addiction Services of Thames Valley | | | | |
| Addiction Services of Thames Valley - Fresh Start Program | | | | |
| Addiction Services of Thames Valley - Heartspace Program | | | | |
| Addiction Services of Thames Valley - Substance Abuse Services - Assessment | | | | |
| Addiction Services of Thames Valley - Substance Abuse Services - Treatment | | | | |
| Addiction Services of Thames Valley - Walk-in Intake for Substance Abuse Concerns | | | | |
| At^lohsa Native Family Healing Services | | | | |
| Centre for Addiction and Mental Health - London Office | | | | |
| Drug and Alcohol Helpline | | | | |
| John Howard Society of London and District - Middlesex County Youth Outreach | | | | |
| MADD Canada - London Chapter | | | | |
| N'Amerind (London) Friendship Centre - Aboriginal Alcohol and Drug Worker Program | | | | |
| Narcotics Anonymous | | | | |
| SafeGrad | | | | |
| Salvation Army (The) - London - Centre of Hope - Withdrawal Management Centre | | | | |
| Salvation Army (The) - London - Correctional and Justice Services - Addiction Education Program | | | | |
| Street Connection (The) | | | | |
| Turning Point Incorporated | | | | |
|
| Middlesex County |
| Addiction Services of Thames Valley - Strathroy Office | | | | |
| At^lohsa Native Family Healing Services - Southwold Satellite Office | | | |  |
| Nimkee Nupigawagan Healing Centre | | | | |
| Oneida Nation of the Thames - Oneida Health Centre - Alcohol and Drug Abuse Program | | | | |
|
| Oxford County |
| Addiction Services of Thames Valley - Ingersoll Office (Youth Centre) | | | | |
| Addiction Services of Thames Valley - Ingersoll Office (Youth Centre) - Substance Abuse Services - Assessment | | | | |
| Addiction Services of Thames Valley - Tillsonburg Office | | | | |
| Addiction Services of Thames Valley - Woodstock Office (CMHA) | | | | |
| Addiction Services of Thames Valley - Woodstock Office (Woodstock General Hospital) | | | | |
|
| Perth County |
| Choices For Change: Alcohol, Drug & Gambling Counselling Centre | | | | |
| Choices For Change: Alcohol, Drug & Gambling Counselling Centre - Listowel Outreach Office | | | | |
| Choices For Change: Alcohol, Drug & Gambling Counselling Centre - St Marys Outreach Office | | | | |
| Crossing Bridges - Youth Peer Support Service | | | | |
|
| Other |
| Al-Anon Family Group | | | | |
| Alcoholics Anonymous - London Intergroup Services Office | | | | |
| Alcoholics Anonymous - Stratford and Area | | | | |
| Centre for Addiction and Mental Health | | | | |
| Centre for Addiction and Mental Health - CAMH McLaughlin Information Centre | | | | |
| Ontario Students Against Impaired Driving | | | | |
