National Council of Churches Buddies

Church World Service

Christian Churches Together in the USA

Churches Uniting in Christ

Ecumenical and Interreligious Leaders Network

Graymoor Ecumenical and Interreligious Institute

Local and Regional Ecumenical and Interfaith Communities (Directory)

National Workshop on Christian Unity

State Ecumenical Executives

United States Conference of Catholic Bishops

Canadian Council of Churches

Caribbean Council of Churches

Cuban Council of Churches

Latin American Council of Churches

World Council of Churches

NewFire Network

Student Christian Movement USA

World Student Christian Federation

Interfaith Broadcasting Commission

Islamic Society of North America

Jewish Council for Public Affairs

Pluralism Project

Source:  http://nationalcouncilofchurches.us/partners/