Saint-Guénolé, Batz-sur-Mer, Gothic parish church in Batz-sur-Mer, France.

Saint-Guénolé is a Flamboyant Gothic church of light grey stone in Batz-sur-Mer, with a three-bay nave, side aisles and a three-bay choir ending in a straight east wall. A square tower with corner pinnacles and louvered openings rises on the right; a small octagonal turret sits between tower and nave. Inside, clustered pillars carry pointed arches and a ribbed vault, and a gilded altarpiece stands at the far end.

The structure was built during the 15th and 16th centuries on the site of an earlier sanctuary dedicated to Saint Cyr and Saint Julitta. The current tower was completed in 1677, replacing two wooden predecessors destroyed by lightning strikes.

The church is dedicated to Saint Guénolé, founder of the Landévennec monastery, replacing an earlier dedication to Saints Cyr and Julitta. A stained-glass window in the right aisle commemorates the church's consecration in 1428. Two wall recesses, enfeus, hold the tombs of the priors of Batz and the Bouchart family, lords of Kerbouchart.

The church stands in Batz-sur-Mer, in the Guérande salt-marsh bay, and its 60-metre tower is visible from far across the flats. The sources give no opening times or visitor access to the tower, so check locally before planning a climb. Inside, look for the two 17th-century organs, the two 17th-century doors and the two wall recesses (enfeus) of the priors of Batz and the Bouchart family.

The tower was erected after two successive lightning strikes in 1603 and 1657 destroyed the original wooden structures. These repeated disasters eventually prompted the decision to build a permanent stone structure.