Russian soprano and singing teacher (b. 1846; d. 1904), born Alina Aleksandrovna Khvostova (Алина Александровна Хвостова), but used the first name Anna in her professional career; also known after her marriage as Anna Aleksandrovna Polyakova-Khvostova (Анна Александровна Полякова-Хвостова).
She graduated in 1866 from the singing classes of Henriette Nissen-Saloman (1819–1879) at the Saint Petersburg Conservatory, and went on to give concerts in Saint Petersburg, Riga and Warsaw. Her repertoire included many of Tchaikovsky's romances, of which she was one of the earliest exponents. Her sister Anastasya Khvostova (1842–1911) was a close friend of the composer from his days at the Imperial School of Jurisprudence in Saint Petersburg.
In 1869, Tchaikovsky dedicated None But the Lonely Heart — No. 6 of the Six Romances, Op. 6 — to Anna Khvostova.