This is a list of selected links to key organizations dealing with mental health and substance use issues:

Library Partnerships
Other Organizations - Canada
Other Organizations - United States
Other Organizations - Outside North America
Other Organizations - International

Canadian Substance Abuse Information Network, CSAIN, CCSA

European Association of Libraries and Information Services on Alcohol and Other Drugs, Elisad

Health Science Information Consortium of Toronto, HSICT

Substance Abuse Librarians and Information Specialists, SALIS

Other Organizations - Canada

Addictions Foundation of Manitoba, AFM

Alberta Health Services, Addiction & Substance Abuse, and Mental Health & Wellness Information, Formerly AADAC

Alcohol Policy Network, APOLNET

Canadian ADHD Resource Alliance, CADDRA

Canadian Centre on Substance Abuse, CCSA (English / French)

Canadian Collaborative Mental Health Initiative, CCMHI (English / French) 

Canadian Council for Tobacco Control, CCTC (English / French) (Note:  As of March 30, 2012 this site is no longer being updated)

Canadian Mental Health Association, CMHA (English / French)

CMHA Ontario Division

Canadian Network for Mood and Anxiety Treatments, CANMAT

Canadian Network of Substance Abuse and Allied Professionals, CNSAAP (English / French) 

Canadian Society for Addiction Medicine, CSAM

Centre for Addictions Research of BC, CARBC

Centre for Suicide Prevention, CSP

Children's Mental Health Ontario

Health Canada (English / French)

Health Nexus Santé (formerly the Ontario Prevention Clearinghouse) (English / French)

Mood Disorders Society of Canada (English / French)

Motherisk, SickKids

National Aboriginal Health Organization, NAHO (English / French) 

Ontario Federation of Community Mental Health and Addictions Programs, OFCMHAP

Ontario Harm Reduction Distribution Program, OHRDP

Ontario Ministry of Health and Long-Term Care

Ontario Prevention Clearinghouse (now Health Nexus Santé) (English / French)

Public Health Agency of Canada (English / French)

Schizophrenia Society of Canada (English / French)

Other Organizations - United States

American Academy of Child & Adolescent Psychiatry, AACAP

American Psychiatric Association

American Psychological Association, APA

American Society of Addiction Medicine, ASAM

Drug Policy Alliance

Join Together, The Partnership at Drugfree.org

National Institute of Mental Health, NIMH

National Institute on Alcohol Abuse and Alcoholism, NIAAA

National Institute on Drug Abuse, NIDA

Office of National Drug Control Policy, ONDCP

Substance Abuse and Mental Health Services Administration, SAMHSA

Other Organizations - Outside of North America

Alcohol Concern:  Making Sense of Alcohol, UK

CICAD, Inter-American Drug Abuse Control Commission, Organization of American States 

Department of Health and Ageing, Australian Government 

DrugScope, UK

European Monitoring Centre for Drugs and Drug Addiction, EMCDDA

National Drug & Alcohol Research Centre, NDARC, Australia

National Mental Health Development Unit, NMHDU, Succeeds NIMHE.

SANE, Australia

Other Organizations - International

United Nations Office on Drugs and Crime, UNODC

WHO - Mental Health