Jean-Delphin Alard (May 8, 1815 – February 22, 1888) was a French violinist.
Alard was born in Bayonne, the son of an amateur violinist. From 1827 he was a pupil of F. A. Habeneck at the Paris Conservatoire, where he succeeded Pierre Baillot as professor in 1843, retaining the post till 1875. He was also a pupil of François-Joseph Fétis and succeeded Baillot as first violinist to the King in 1840. His playing was full of fire and point, and his compositions had a great success in France, while his violin school had a wider vogue and considerably greater value. He was a representative of the modern French school of violin playing, composed nocturnes, duets, études, etc., for the violin, and was the author of an Ecole du violon, which was adopted by the Conservatoire. Pablo de Sarasate was amongst his students. Mention should also be made of his edition in 40 parts of a selection of violin compositions by the most eminent masters of the 18th century, Les Maitres classiques du violon (Schott). Alard died in Paris. Jean-Delphin Alard was the son-in-law of Jean-Baptiste Vuillaume.