André Gabriel Edmée Pirro (12 February 1869 – 11 November 1943) was a French musicologist and an organist.

He studied with César Franck and taught music history at the Schola Cantorum.

Pirro published his academic thesis on the Aesthetics of Bach in 1907, followed by Descartes and the Music'.

His famous pupils include Yvonne Rokseth, Vladimir Fedorov, Dragan Plamenac, Armand Machabey, Geneviève Thibault de Chambure, Marc Pincherle, Jacques Chailley, Eugénie Droz, and Aimée Van de Wiele.

These days he is probably most often remembered through his musicological collaborations with Alexandre Guilmant concerning reprints of ancient organ music.