The World Evangelical Alliance (WEA) is a global organization of evangelical Christian churches founded in 1846 in London, England. It brings together 129 national alliances of churches, 104 member associations and 6 boards. It is the largest international organization of evangelical churches, and is now headquartered in New York, USA. The World Communion of Reformed Churches is a major partner organization. This organization brings together a part of the churches evangelical Christian.