Old Cathedral of St. Anthony, Guaratinguetá, Colonial church in Guaratinguetá, Brazil.

The Old Cathedral of St. Anthony in Guaratinguetá is a Baroque church whose exterior is edged by pyramidal pinnacles, with the body separated from the towers by double columns and a compressed triangular pediment set over the cornice. Inside are three naves divided by round arches, Baroque and Neoclassical altars with Rococo elements, frescoes and woodcarving, and a sixteeenth-century terracotta image of Saint Anthony. The right tower, built in 1817, holds a clock installed in 1899 and bells from 1856; the left tower was finished in 1892.

The oldest monument in Guaratinguetá began around 1630 as a chapel of wattle-and-daub with a thatch roof, around which the town grew. A rammed-earth building followed in 1701, and it was enlarged between 1773 and 1780. After works from 1822 to 1847 it took its current form; the left tower was finished in 1892 and the right tower raised in 1913.

The building carries the name of Saint Anthony and reflects the religious traditions that Portuguese settlers established in this region. Through its ongoing worship services and celebrations, these spiritual connections remain woven into the community's daily life.

The building is generally accessible during weekdays and weekends, with higher activity during Sunday masses and religious observances throughout the liturgical calendar. Visitors should be mindful that active worship services may affect access and respectful attire is expected.

Frei Galvão, born in Guaratinguetá, was baptized in this church and celebrated his first mass here in 1762. The building also keeps a 17th-century terracotta image of Saint Anthony, the town's patron, and funeral plaques of former vicars such as Monsignor João Fillipo (1928).