Iglesia Luterana Santa Trinidad (St. Trinidad Lutheran Church) is affiliated with the Iglesia Evangélica Luterana Argentina (IELA).

There is a Lutheran Church in Urdinarrain affiliated with the Iglesia Evangélica del Río de La Plata (IERP).

Iglesia Bautista Emanuel (Emanuel Baptist Church) traces its history to Pastor Federico Roberto Leimann (born in 1881 in Latvia) who had been serving Ebenezer Baptist Church in General Ramírez (Entre Ríos), the first German-speaking Baptist church in Argentina. In 1923, Pastor Leimann and his family along with a group of church members moved to Urdinarrain. On 23 November 1924, the first baptisms (twelve individuals) were held in the Gualeguay River and the congregation of Emanuel Baptist Church was founded. Those twelve were:

There is a German Evangelical Church in San Antonio affiliated with the Iglesia Evangélica del Río de La Plata (IERP). It's members are both Lutheran and Reformed. A new church building was constructed in 1965.

There is a Lutheran Church in San Antonio affiliated with the Iglesia Evangélica Luterana Argentina (IELA).

There is a Congregational Church in San Antonio.

There is a Catholic parish in San Antonio.

The Iglesia Adventista (Seventh-Day Adventist Church) is located outside of the town of San Antonio adjacent to the Adventist parochial school.

Santa Celia was founded by Volga German Lutherans.

Location

The church in Lucas González is part of the Iglesia Evangélica del Rio de la Plata (IERP).