Pedro or Pierre Gailhard, full name Pierre Samson Gailhard, (1 August 1848 – 12 October 1918) was a French opera singer and theatre director. Gifted with an exceptional singing bass voice, Pedro Gailhard made his debut at the Opéra-Comique in December 1867, then sang at the Opéra Garnier, as Mephisto in Faust by Charles Gounod in 1871, a role which he also sang at Covent Garden. His interprétation of Leporello in Don Giovanni by Mozart was considered remarkable, as was his portrayal of other roles, such as Osmin in Mozart's Die Entführung aus dem Serail, Kaspar in Weber's Der Freischütz, the King in Thomas' Hamlet, Pythéas in Gounod's Sapho, Saint-Bris and Nevers in Meyerbeer's Les Huguenots, and Faust in Boito's Mefistofele.