Abbey of St John, Laon

Engraving of the abbey in the Monasticon Gallicanum (late 17th century)

The Abbey of St. John, Laon (French: Abbaye Saint-Jean de Laon) was a Benedictine monastery in Laon, France, from 1128 to 1766, which replaced a nunnery founded in 641.[1] The prefecture of the department of Aisne now occupies the site.