Knyazhnin

Knyazhnin or Kniazhnin (Княжнин) is a Russian masculine surname, its feminine counterpart is Knyazhnina or Kniazhnina. It may refer to
 * Ekaterina Kniazhnina (1746–1797), Russian poet
 * Yakov Knyazhnin (1742–1791), Russian author, husband of Ekaterina