Kseniya Aleksandrovna Rappoport (Russian: Ксе́ния Алекса́ндровна Раппопо́рт; born 25 March 1974 in Saint Petersburg) is a Russian actress. She graduated in 2000 from Saint Petersburg Academy of Theatrical Arts and was immediately invited to join the Maly Drama Theatre. She played Nina Zarechnaya in The Seagull, Elena in Uncle Vania, and Sonia in La doppia ora.
She has appeared in films and TV series such as Streets of Broken Lights, Baron, Anna Karenina, Nicholas II (Germany), The Russian Bride, National Security Agent, Empire under Attack, Calendula Flowers, Prokofiev (Germany), Get Thee Out, Criminal Petersburg, Homicide, and I Pay Up Front and My Wife's Romance. She starred in the Italian film La sconosciuta (2006), L'uomo che ama (2008) and in the Golden Lion nominated movie La doppia ora (2009), for which she won Volpi Cup for Best Actress at the 66th Venice Film Festival.
She made her debut in cinema at the age of 16 years, while the decision to become an actress was influenced by her role in the film Get Thee Out.