The Evangelical Waldensian Church of the Río de la Plata (IEVRP) has about twenty congregations, spread across the southern and western coastlines of Uruguay and the Argentine provinces of La Pampa, Buenos Aires, Entre Ríos, and Santa Fe. Many Waldensians have also migrated to other parts of South America, where they have joined sister Protestant churches. For over a century and a half, Waldensian churches have had a presence in the Río de la Plata region of Uruguay and Argentina.
Since the arrival of the first Waldensians, the Evangelical Waldensian Church in the Río de la Plata has had a unique identity and way of being. The Waldensian congregations in the Río de la Plata have developed a way of thinking and witness, and a way of doing ministry that is the result of an ongoing dialogue in the church that has drawn on their South American context and a reworking of the traditions that they inherited from their immigrant forebears. Today, the identity of the Waldensians in the Río de la Plata is a result of a blending and balancing of historic Waldensians principles and the challenges of the present.