Monique Haas (20 October 1909 – 9 June 1987) was a French pianist.
Born in Paris, she studied at the Conservatoire there with Joseph Morpain and Lazare Lévy, taking a Premier Prix in 1927. She went on to study with Rudolf Serkin and Robert Casadesus. As a performer she toured all over the world, winning much praise for her performances of 20th-century music. The composer Francis Poulenc, himself an accomplished pianist, praised her as "the adorable Monique Haas who plays the piano ravishingly", and Henri Dutilleux described her as "a celebrated interpreter of the music of Ravel"
Like many of the French pianists who grew up in the aftermath of the First World War, Monique Haas's repertoire was characterised by an avoidance of Romantic composers and a significant representation of French music. Pieces by François Couperin and Jean-Philippe Rameau appeared regularly on her programmes, as well as that of Mozart and Haydn. The music of Schumann was the significant exception to her neglect of romanticism, though she also included Chopin's studies in her repertoire.
However, it was as a performer of twentieth-century French music that Haas is best remembered. Her recordings of Debussy include the comparatively neglected Douze Études, which won a Grand Prix du Disque, and the Préludes. She also recorded both of the Ravel concertos, the G major twice, as well as his complete solo piano music.