Église Notre-Dame de Lamourguier, Southern Gothic church in historic Narbonne, France.

Église Notre-Dame de Lamourguier is a 13th-century Southern Gothic church of light tan ashlar, its base a lower rough stone wall with slit openings. Tall flat buttresses divide the walls, and a square tower with a pentagonal stair turret stands on the south side; the chevet was crenellated. Inside, a single wide nave is covered by a timber roof carried on six masonry diaphragm arches, with rectangular side chapels between deep buttresses and a seven-sided rib-vaulted apse.

The church is cited in 782, when witnesses swore there in a judgment between Milon, Count of Narbonne, and Archbishop Daniel. In 1078 or 1086 it became a regular Benedictine priory attached to Saint-Victor Abbey in Marseille, under names such as Beata Maria de la Morguia. By 1572 mass was no longer celebrated and only three religious remained in 1602; in 1662 Archbishop François Fouquet pushed it to join the Congregation of Saint-Maur, which restored it. Rebuilt in the 13th century, it was classified as a monument on 28 March 1900.

The name Lamourguier probably derives from the Latin "Morguia", used for the priory from the 11th century. From 1868 the church stored carved blocks, steles, columns and sarcophagi taken from Narbonne's demolished ramparts; one block in the nave bears the word "NARBONE". The lapidary collection left for Narbo Via between 2017 and 2018.

The church sits at Place Émile Digeon and is easily reachable from Narbonne's city center on foot or by local transport. Visitors should check opening times in advance, as access may vary depending on the day and season.

The church kept its name in the 1871 Commune: from 24 to 31 March it housed the Club de la Révolution, the headquarters of the central commune of the Narbonne district led by Émile Digeon and Baptiste Limouzy. The square in front now bears Digeon's name.