Joseph Louis d'Ortigue (22 May 1802 – 20 November 1866) was a French musicologist and critic. A specialist in liturgical music and a conservative Catholic of ultramontane and royalist leanings, he was a close friend of both Berlioz and Liszt. His most influential work was Dictionnaire liturgique, historique, et theorique de plain-chant et le musique d'église, but he also wrote for many of the most prominent periodicals of the day, including Journal des débats and Le Ménestrel where he was the editor-in-chief from 1863 until his sudden death at the age of 64.