- World Evangelical Congregational Fellowship, WECF
- Fellowship of Congregational Churches, Australia
- Alliance of Evangelical Congregational Churches, Brazil
- Union of Evangelical Congregational Churches, Brazil
- Union of Congregational Churches in Bulgaria
- Congregational Christian Churches in Canada
- Evangelical Fellowship of Congregational Churches, Great Britain
- Evangelical Churches Association (Congregational), Manipur
- Evangesko-Kongresanska Crkva Skopje, Republic of Macedonia
- Chuuk Congregational Church of Christ, Federated States of Micronesia
- The Congregational Union of New Zealand
- Congregational Union of Northern Ireland
- National Association of Congregational Churches, Philippines
- Union of Congregational Churches in Portugal
- Evangelical Fellowship of Congregational Churches, Republic of South Africa
- Conservative Congregational Christian Conference, United States of America
