Chapelle Saint-Ivy de la Congrégation, 18th-century Catholic chapel in Pontivy, France.

Chapelle Saint-Ivy is an 18th-century chapel featuring a single nave built from granite and schist walls topped by a masonry spire. The structure is covered with slate roofing that protects the interior from weathering.

The chapel was built in 1770 to replace Pontivy's original parish church that had stood since the 7th century. This construction marked a shift in the town's religious life to a new building on the same sacred site.

The chapel is also known as Sant Ivi, the Breton form of Saint Ivy, and locals call it the chapelle Saint-Ivy de Pontivy. It stands on rue Saint-Ivy, the street named after the same saint, about a kilometre from the town centre.

The chapel sits on rue Saint-Ivy about one kilometer from Pontivy's town center. It remains an active place of worship, so visitors should be respectful of those praying or attending services.

The chapel's name refers to Saint Ivy, and the building is also called chapelle Saint-Ivy de Pontivy. Its left-hand tower with an internal staircase is a detail to look for when approaching from rue Saint-Ivy.