Alexandre Eugène Cellier was a French organist and composer.
Cellier studied organ with Alexandre Guilmant until 1908. In 1908 he won the first prize for organ at the Conservatoire de Paris. Before that he also studied with Henri Dallier and Charles-Marie Widor. He was the organist Titulaire of the Temple de l'Étoile in Paris from 1910 until his death in 1968. The organ he used was a 3-manual Cavaillé-Coll organ with 32 stops, which was extended by Mutin (Cavaillé-Coll) in 1914.