Pierre Sancan (24 October 1916 in Mazamet – 20 October 2008 in Paris) was a French composer, pianist, teacher and conductor. Along with Olivier Messiaen and Henri Dutilleux, he was a major figure among French musicians in the mid-twentieth-century transition between modern and contemporary eras; but outside France his name is almost unknown. Sancan sought to reconcile contemporary performance techniques with the harmonic language of Debussy, a composer of whom Sancan was an expert interpreter.