Lobbes Abbey, Medieval abbey in Lobbes, Belgium.

Lobbes Abbey is a Benedictine monastery with a collegiate church that originated in the 7th century and underwent later modifications. The site sits on elevated terrain above the Sambre River and displays architectural layers from multiple periods.

The abbey was founded around 650 and grew into an important monastic center in the Hainaut region. During medieval times, it served as a center for learning and religious education.

The monastery honors Saint Ursmer, a figure whose veneration remains visible in the attached collegiate church today. Visitors encounter places dedicated to his memory throughout the complex.

The former abbey site lies in Lobbes, about 2 km west of Thuin and 18 km southwest of Charleroi. The surviving collegiate church of Saint-Ursmer stands on a height above the Sambre, facing the belfry of Thuin, while the farm buildings sit close to the railway line. Most of the monastic buildings, including the abbey church of Saint Peter, were destroyed after 1794, so expect scattered remains rather than a complete complex.

The abbey's annals survived almost intact, letting historians trace its foundation by Saint Landelin, a former brigand from Bapaume who repented and built the monastery on the bank of the Sambre where he had committed his sins. Its library held the Lobbes Bible, completed in 1084 and now kept at the Tournai Seminary.