Mariya Alekseevna Svistunova, née Rzhevskaya (June 26, 1778, St Petersburg - September 1, 1866, Paris) was a lady-in-waiting at the Russian Court and a convert to Roman Catholicism. She was the daughter of writer Aleksei Andreevich Rzhevsky (1737–1804) and Glafira Ivanovna Rzhevskaya (1758–1826) (née Alymova). She married Nikolai Petrovich Svistunov (1770–1815) and they had two sons and four daughters.