Adolphe Charles Adam (French: [adolf adɑ̃]; 24 July 1803 – 3 May 1856) was a French composer and music critic. A prolific composer of operas and ballets, he is best known today for his ballets Giselle (1841) and Le corsaire (1856, his last work), his operas Le postillon de Lonjumeau (1836), Le toréador (1849) and Si j'étais roi (1852) and his Christmas carol Minuit, chrétiens! (1844), later set to different English lyrics and widely sung as "O Holy Night" (1847). Adam was a noted teacher, who taught Delibes and other influential composers.