Henri Trianon (11 July 1811 in Paris – 17 October 1896 in Paris) was a French critic, librettist and translator of works by Homer and Plato, and operas by Weber and Mozart into French.[1] He was an artistic and literary critic in Paris who eventually became teacher. In 1842 he became under-librarian and then librarian at Sainte Geneviève in 1849.[2] From 1857-59 Trianon was associated with Nestor Roqueplan in the administration of the Opéra-Comique.