Abbaye Saint-Étienne, Medieval Benedictine abbey in Baignes-Sainte-Radegonde, France.

Abbaye Saint-Étienne is a former Benedictine abbey in Baignes-Sainte-Radegonde, Charente, whose Romanesque church was begun between 1060 and 1066. A tall square tower of pale grey ashlar blocks, capped by a pyramidal roof with a cross, stands beside the main body of rough grey and brown stone. That body has a steep roof and a large pointed-arch traceried window, with a lower lighter-stone section holding a round-arched window and a glazed door.

The monastery was founded before 1083 and experienced significant changes during the English invasions and religious conflicts of the 16th century. These events shaped the structure and use of the building permanently.

The abbey is named after Saint Stephen and served as a place of prayer and work following Benedictine principles. Visitors can still sense the spiritual purpose of the site, which continues to function as a place of worship today.

The abbey functions today as a parish church with regular hours open to visitors who wish to view the Romanesque architecture. Those interested in exploring the interior should check current visiting times beforehand.

The oldest surviving charter of the abbey is dated 14 February 1083; it names the house Sanctus Stephanus, after Saint Stephen, and belongs to a cartulary. The dedication to the first martyr explains the name Saint-Étienne, which the parish church still bears.