Lescar Cathedral (Cathédrale Notre-Dame-de-l'Assomption de Lescar) is a Roman Catholic cathedral, and a national monument of France, located in the town of Lescar.
It was formerly the seat of the Diocese of Lescar, suppressed under the Concordat of 1801 and divided between the dioceses of Agen and Bayonne.
The building was begun in 1120 by Bishop Guy of Lons, and was sacked by the Protestants during the reign of Jeanne III of Navarre. It was restored in the 17th and 18th centuries. The apse, housing a pavement mosaic from the 12th century with hunting scenes, is in Romanesque style. In the interior, columns have capitals depicting histories of the life of Daniel, of the birth of Christ and the Sacrifice of Abraham.