Affiliated Tribes of Northwest Indians
About Affiliated Tribes of Northwest Indians
Founded in 1953 by visionary tribal leaders, the Affiliated Tribes of Northwest Indians represents a historic commitment to tribal sovereignty and self-determination across the Pacific Northwest. Based in Portland, Oregon, ATNI serves as a collaborative platform for 57 tribal governments who have chosen to unite their voices and strengthen their collective influence in the region. What sets ATNI apart is its deep-rooted foundation in the communities it serves—the organization was built by and for the tribal nations it represents, ensuring authentic representation and accountability to member tribes. Operating as a nonpro fit corporation chartered under Oregon law, ATNI maintains transparent governance structures where authority flows directly from member tribes through the Executive Council and down to operational committees. The organization's constitution, bylaws, and comprehensive policies reflect decades of collaborative experience and tribal wisdom. ATNI's two Northwest locations provide accessible services and support to member tribal governments throughout Oregon, Idaho, Washington, southeast Alaska, Northern California, and Western Montana. For tribal nations seeking coordinated advocacy, policy support, and collaborative partnership in addressing regional challenges, ATNI offers a proven model of indigenous-led governance and tribal unity.