The Captain's Daughter (Капитанская дочка in Cyrillic; Kapitanskaja dočka in transliteration) is an opera in four acts (eight tableaux) by César Cui, composed during 1907-1909. The libretto was adapted by the composer from Alexander Pushkin's novel of the same name.

The opera was premiered on 14 February 1911 (Old Style) at the Mariinsky Theatre in Saint Petersburg under the conductorship of Eduard Nápravník. Its Moscow premiere took place on 17 September 1914 at the Solodovnikov Theater, with S.I. Zimin's Opera Company.