Templo de San Marcos, Aguascalientes, Baroque Catholic church in Aguascalientes, Mexico.

The Templo de San Marcos is a Catholic church in the Barrio de San Marcos, Aguascalientes, dedicated to the Virgin of Carmen and Saint Mark the Evangelist. Its construction began in 1655 and was completed around 1765, with a baroque facade and a layout that includes a chapel annexed for the cult of Nuestra Señora del Pueblito.

Construction began in 1655 under the direction of Manuel Colón de Larreategui and extended over a century, completing in 1765. During the Cristero War of the 1920s, the church became a focal point for Catholic resistance against government restrictions.

The temple hosts two important patron saint celebrations: a novena on July 16 honoring the Virgin of Carmen and a three-day festival for Saint Mark on April 25. These occasions bring worshippers together and remain central to the religious calendar here.

The church stands in the Barrio de San Marcos, the neighbourhood that hosts the Feria Nacional de San Marcos, so access around the building is busiest during the fair. Two patronal observances shape the calendar: a novenario from 16 July for the Virgin of Carmen and a triduo on 25 April for Saint Mark. A chapel annexed to the temple holds the cult of Nuestra Señora del Pueblito.

The church is also known as Parroquia de Nuestra Señora del Carmen, and it keeps a chapel dedicated to Nuestra Señora del Pueblito, venerated by the Tlaxcaltec Indians settled in the Barrio de San Marcos in the 17th century. In 1925, during the Cristero conflict, residents defended the building when the governor José María Elizalde ordered it handed to the schismatic Mexican Catholic Apostolic Church; the clash left several dead and dozens wounded.