Église Saint-Germain-l'Auxerrois de Châtenay-Malabry, Medieval church in Châtenay-Malabry, France.

Église Saint-Germain-l'Auxerrois has a nave that is partly Romanesque and was reworked in the 13th century, with side aisles added later. Its square Gothic choir dates from the third quarter of the 12th century and was restored in 1964. The bell tower, built in the 11th and 12th centuries, has three levels and a spiral chestnut staircase.

Construction began in the late 10th century with significant expansions during the 11th century that transformed the structure. The top level of the bell tower was added around 1120, marking the final major stage of the building's development.

The church is dedicated to Saint Germain of Auxerre, and its north door, remade in 1807, shows him between Saint Lupus of Troyes and Saint Geneviève. Sully Prudhomme, the first Nobel laureate in literature, was baptised here. The painted coat of arms of Nicolas de Malézieux, lord of Châtenay, survives on the south nave pillar.

The church stands in the town centre of Châtenay-Malabry, in the Hauts-de-Seine department. The nave is entered from the north door, whose pediment was remade in 1807 and shows Saint Germain of Auxerre flanked by Saint Loup of Troyes and Saint Geneviève. The bell tower's spiral chestnut staircase is not open to visitors.

Excavations in 1732 uncovered twelve graves containing pottery vessels filled with ashes, offering rare evidence of early medieval burial practices. This discovery demonstrates that the site held religious importance long before the current church structure was completed.