Nîmes Cathedral, Catholic cathedral in Nîmes, France.

Nîmes Cathedral is a single-vessel building with side chapels and ogival vaulting, its present structure dating from the 17th century. The north tower, about 40 m high with a Gothic top storey, ends in a flat roof reached by a spiral stair in a turret; the nave vaults rise 20 m above a 55 m-long vessel. Behind the roofline rises the lantern of the Baroque Chapel of the Rosary.

A Romanesque church was consecrated here in 1096 by Pope Urban II, on the site of earlier buildings. Reformed troops damaged the cathedral in 1567 and 1621, destroying its southern "Tour du Trésor". In the 17th century Bishop Cohon rebuilt it as a single vaulted nave with side chapels, and in 1822 the Romanesque portal was replaced by the present neoclassical door.

The cathedral is dedicated to the Virgin Mary and to Saint Castor of Apt, a local saint. It has been the seat of the Bishops of Nîmes since the 4th century; in 1877 the diocese was renamed Nîmes–Uzès and Alès. The neo-Byzantine interior decoration was carried out by Henri Antoine Révoil between 1877 and 1882.

The building sits in the city center on Rue Saint-Castor and is easily accessible on foot. Visitors can explore the interior and take advantage of guided tours to learn more about the architectural details.

The north tower, about 40 metres high, ends in a flat terrace reached by a spiral staircase in a small turret; its top storey is Gothic. The nave vaults rise 20 metres, yet the nave is only 55 metres long, making the cathedral smaller in area than the church of Saint-Baudile.