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International Association for Public Participation (IAP2)

Welcome to IAP2! IAP2 is made up of a diverse and growing group of people who design, implement, use, and participate in public participation processes. Anyone who works with the public to develop policy, make decisions, or implement programs will benefit from IAP2 membership.

Please email questions related to Member Services to

All other inquiries, please email

Mailing Address:

IAP2 International Headquarters
PO Box 7580,
Denver, CO 80207 USA