In the USA
ADPCA - Association for the Development of the Person-Centered Approach
A professional organization with international membership, Publishers of the Person-Centered Journal http://www.adpca.org/

Association for Humanistic Psychology http://ahpweb.org

Carl Rogers Archive at the University of California Santa Barbara
Library Archives of Humanistic Psychology includes Writings, video and audio tapes Carl Rogers, Virginia Satir, Rollo May and many other authors .http://www.oac.cdlib.org/findaid/ark:/13030/tf2f59n977

Center for Studies of the Person http://www.centerfortheperson.org/

The Focusing Institute www.focusing.org

The New York Person-Centered Resource Center
(NYPCRC) is an informational website established to create awareness of Person-Centered activities and to help promote the Person-Centered Approach in New York City. http://www.nypcrc.org/

Person-Centered Expressive Therapy Institute - Natalie Rogers http://www.nrogers.com

Kids' Workshops offer training to encourage children in Person-Centered manner to grow into adults who live more profoundly. http://www.kids-workshop.com/

International
British Association for the Person Centred Approach http://www.bapca.org.uk/

CCI Co-Counselling International http://www.shef.ac.uk/cci/index.html

International Archives of the Person-Centered Approach
In Dutch, French, English, Spanish, Portuguese, German - Director: Alberto S. Segrera http://www.uia.mx/aiecp/

The Person-Centered Website of Peter F. Schmid http://www.pca-online.net/index-pcanet.htm

Network of the European Associations for Person-Centered and Experiential Psychotherapy and Counseling pce-europe.org

World Association for Person-Centered and Experiential Psychotherapy and Counseling (WAPCEPC) pce-world.org