Canada

• CAMH Gender Identity Clinic in Toronto, Ontario
• Vancouver Coastal Health Transgender Health Program

United States

• Gender Identity Project in New York City
• Ingersoll Gender Center in Seattle, Washington
• Johns Hopkins Center for Sexual Health & Medicine in Baltimore, Maryland
• American Civil Liberties Union's LGBT Get Equal Project
• Program in Human Sexuality Transgender Services at the University of Minnesota
• http://www.med.umn.edu/fm/phs/clinic/transgender.html for professionals working with transgender and transsexual youth, gender-variant children and their families.
• Gender Center of Colorado - Home, Wheat Ridge, Colorado

United Kingdom

• The Gender Identity Research and Education Society (GIRES)
• About Equal Opportunities Cheshire, United Kingdom

Netherlands

• Humanitas Work Group, Transsexualism - Gender Dysphoria in the Netherlands

Germany

• Sexualmedizin Department at the University of Kiel, Germany

Global

• GenderCare, Global