San Giovanni Battista, Gothic church in Bagno Vignoni, Italy.

San Giovanni Battista is a former parish church in Bagno Vignoni, in the municipality of San Quirico d'Orcia. It has a single nave and a very plain facade. A portico facing the village's thermal basin holds the small chapel dedicated to Saint Catherine of Siena, built in 1660.

The church was an ancient pieve church, a baptismal church with jurisdiction over surrounding parishes. The chapel dedicated to Santa Caterina da Siena on the portico overlooking the pool was erected in 1660. It originally housed an early 17th-century fresco of the Risen Christ, which has been detached and is now kept inside the church.

Every 24 June the feast of Saint John is held with a procession around the village's thermal pool and a blessing of the fields. The church also holds a small chapel dedicated to Saint Catherine of Siena, added in 1660 on the portico facing the water.

The church opens onto the porch overlooking the large thermal pool in the centre of Bagno Vignoni, so it is reached on foot from the village lanes. The small chapel of Santa Caterina da Siena, built in 1660, stands on that porch; the early-17th-century fresco of the Risen Christ once there is now kept inside the church.

The chapel dedicated to Saint Catherine of Siena, built in 1660, stands on the portico facing the village's thermal basin. It once held an early 17th-century fresco of the Risen Christ, now detached and kept inside the church.