Église Saint-Sulpice d'Aulnay-sous-Bois, Catholic parish church in Aulnay-sous-Bois, France

The Église Saint-Sulpice is a Catholic church at 2 rue de Sevran, facing the Place de l'Église in the Vieux-Pays quarter. Its white facade has a square tower with a pyramidal tiled roof and a round clock face, stone quoins at the corners, and pointed-arch windows with dark glass and stone surrounds; a slender stone buttress stands on the left. The 12th-century sanctuary and choir survive from the Latin-cross plan, while the transept crossing and part of the nave date to the 13th century.

Cluny Abbey built a first church here in the 11th century after Gautier, lord of Aulnay, donated land, a wood and two mills. In the 12th century a new priory church was raised in the form of a Latin cross, whose sanctuary and choir survive. The transept crossing and part of the nave date from the 13th century, the nave was enlarged in the 16th and 17th centuries, and the priory was suppressed around the start of the 17th century, the church becoming parochial in 1617.

The church is the main parish church of Aulnay-sous-Bois, dedicated to Saint Sulpice and standing on the Place de l'Église in the Vieux-Pays quarter. Sunday Mass is celebrated in anticipation on Saturday at 6:30 pm. Three chapels are attached to the parish: Notre-Dame-de-Compassion du Coudray, Saint-Paul d'Ambourget and Saint-Jean in the Rose des Vents quarter.

The church is located in Aulnay-sous-Bois and is accessible by public transportation from Paris. Visitors should check opening times in advance, as access may vary depending on service schedules.

The 1819 cadastral plan records a building about forty metres long with a flat chevet and three buttresses along the north aisle. The bell tower and its roof were restored and altered in 1967, the choir in 2005-2006. The church was inscribed as a monument historique in 1929, then classified in 1942.