Baronne Almaury de Maistre (English: Baroness Almaury de Maistre) née Henriette-Marie de Sainte-Marie (31 July 1809, Nevers – 7 June 1875, Chaulgnes) was a French composer. In 1831 she married Baron Charles-Augustin Almaury de Maistre. She was the cousin of Joseph de Maistre by marriage and maintained a popular salon. She composed etudes and an opera Roussalka which was presented in Brussels at the Théâtre de la Monnaie in 1870.