Thierhaupten Abbey, Benedictine monastery in Thierhaupten, Germany.

Thierhaupten Abbey is a monastic complex with multiple buildings, including the main church of Saints Peter and Paul, cloister buildings, and a surrounding boundary wall. The structures are typical of a medieval monastery and reflect the architecture of that period.

The abbey was founded in the 8th century by Duke Tassilo III of Bavaria and later came under the control of the bishops of Augsburg during the Carolingian period. This early establishment made it an important monastic center in the region.

The name Thierhaupten, "beasts' heads", is said to refer to a heathen shrine formerly on the site, possibly the remains of a pagan cult place. The abbey is dedicated to Saints Peter and Paul, and its church has served as the Catholic parish church of St. Peter und Paul since 1809. The Freundeskreis Kloster Thierhaupten, founded after the municipality bought the complex in 1983, has around 350 members and organises exhibitions, guided tours and concerts on the monastery's history and culture.

The abbey stands on the Klosterberg above the village of Thierhaupten, north of Augsburg and west of the Lech. The former convent and economy buildings now house the Bavarian Building Archive, the Schwaben branch of the Bavarian State Office for Monument Protection's prehistory department, and a school of village and land development; the former stables hold a restaurant. The inner courtyard serves as an event space.

The municipality purchased and fully renovated the badly deteriorated complex in 1983. This rescue effort saved the monastic structures from being lost completely to time and neglect.