The surname of the title character in Leo Tolstoy's 'Anna Karenina' is Karenina. Anna Arkadyevna Karenina is a married Russian aristocrat whose affair with Count Vronsky becomes the novel's most famous storyline.
Anna is married to Alexei Alexandrovich Karenin, a senior government official, and has a son, Seryozha. Her relationship with Vronsky places her in conflict with the social expectations, religious morality, and gender double standards of 19th-century Russian high society. Tolstoy sets her story alongside the contrasting relationship of Konstantin Levin and Kitty Shcherbatskaya.
Readers may encounter the title as 'Anna Karenin' in some English translations. Russian surnames traditionally take gendered forms, so Karenina is the feminine form of Karenin. Both forms refer to the same character, but Karenina is the standard form in the title used here. Oblonsky, Vronsky, and Karenin are important names in the novel, but none is Anna's surname.