Abbaye Saint-Pierre-ès-Liens de Tourtoirac, Romanesque abbey in Tourtoirac village, France.

Abbaye Saint-Pierre-ès-Liens is a former Benedictine monastery in Tourtoirac, in the Auvézère valley. Its abbey church, built in the late 11th or early 12th century, has a rare trefoil plan: three apses arranged around the transept crossing, a layout also found at Montagrier. The site keeps two Romanesque towers, a chapter house and a chapel, plus a 17th-century abbot's lodging. The taller square tower, of rough grey stone, ends in a steep pyramidal roof with a metal cross; the lower tower carries a clock face.

The monastery was founded in the early medieval period and received papal confirmation in 1120 as a major landholder in the region. This church recognition helped it exercise authority over numerous parish churches across Périgord.

The abbey's name, Saint-Pierre-ès-Liens, refers to Saint Peter in Chains, a dedication tied to his imprisonment in Jerusalem. The monastic enclosure also preserves a 17th-century abbot's residence, showing how the community's leadership lived long after the Romanesque church was built.

The monastic enclosure stands in the Auvézère valley where the valley narrows and the river can be crossed, so the site is reached from the village of Tourtoirac itself. The church, the two Romanesque towers, the chapter house and the chapel stand together, with the 17th-century abbot's lodging nearby, letting you read the layout of the medieval enclosure in one walk.

The church has a triconch plan: three apses arranged around the transept crossing, a layout found in Périgord only here and at the church of Montagrier. The abbey church was built in the last third of the 11th or early 12th century, and the nave was added at the end of the 12th century.