Iglesia de San Matías Apóstol, Lota, Gothic Revival church in Lota, Chile.

The Iglesia de San Matías Apóstol is a Catholic church in Lota built between 1923 and 1926, its design based on the medieval Neo-Gothic style in carved stone. It belongs to the Archdiocese of the Santísima Concepción, and in its crypt lie the mortal remains of Matías Cousiño.

Built between 1923 and 1926 at the request of Carlos Cousiño, the church was financed by the Compañía Minera e Industrial de Chile as part of Lota's beautification during the coal boom. Its crypt holds the remains of Matías Cousiño. The 2010 earthquake caused minor damage, and restoration was completed in 2013.

The church is named for Saint Matthias the Apostle, and its crypt holds the remains of Matías Cousiño, the coal magnate whose family requested the building. The temple belongs to the Archdiocese of the Santísima Concepción and is counted among Lota's tourist attractions, so visitors often combine a look at the carved stone exterior with the Cousiño tomb below.

The church is located in central Lota and is easily accessible on foot from the main streets of the town. The building can be viewed from outside at any time, though visiting the interior may depend on service schedules and local conditions.

In the church's crypt lie the mortal remains of Matías Cousiño, the coal magnate whose family name is tied to Lota's mining development. The 2010 earthquake caused only minor damage inside and outside the building, and restoration work was completed in 2013.