The Evangelical Church of the River Plate (Iglesia Evangélica del Río de la Plata or IERP) is a United, Protestant denomination with congregations in Argentina, Paraguay, and Uruguay.

It is named after the Río de la Plata Basin, where the majority of its congregations are located.

The church ordains women as ministers and supported civil unions and same-sex marriage.

In 1995 the Swiss Evangelical Church in Argentina - with 600 members, 1 congregation and several house fellowships - become affiliated with the denomination.

[5] It is a Protestant church, and the basis of its faith are the Holy Scriptures, with the message of God and its live in Earth in the person of Jesus Christ.