World Communion of Reformed Churches
The World Communion of Reformed Churches (WCRC) is a Christian ecumenical body formed in June 2010 by the merger of the World Alliance of Reformed Churches (WARC) and the Reformed Ecumenical Council (REC). The WCRC is the largest association of Reformed (Calvinist) churches in the world.
Source: Wikipedia — World Communion of Reformed Churches (CC BY-SA 4.0)