- Anna Arkadyevna Karenina (Анна Аркадьевна Каренина): Stepan Oblonsky's sister, Karenin's wife and Vronsky's lover.
- Count Alexei Kirillovich Vronsky (Алексей Кириллович Вронский): Anna's lover, cavalry officer.
- Prince Stepan "Stiva" Arkadyevich Oblonsky (Степан "Стива" Аркадьевич Облонский): civil servant and Anna's brother, man about town, 34 years of age. (Stepan and Stiva are Russianized forms of Stephen and Steve, respectively.)
- Princess Darya "Dolly" Alexandrovna Oblonskaya (Дарья "Долли" Александровна Облонская): Stepan's wife, 33 years of age.
- Alexei Alexandrovich Karenin (Алексей Александрович Каренин): senior statesman and Anna's husband, twenty years her senior.
- Konstantin "Kostya" Dmitrievich Levin/Lyovin (Константин "Костя" Дмитриевич Лёвин): Kitty's suitor, Stiva's old friend, landowner, 32 years of age.
- Nikolai Dmitrievich Levin/Lyovin (Николай Дмитриевич Лёвин): Konstantin's elder brother, impoverished alcoholic.
- Sergei Ivanovich Koznyshev (Сергей Иванович Кознышев): Konstantin's half-brother, celebrated writer, 40 years of age.
- Princess Ekaterina "Kitty" Alexandrovna Shcherbatskaya (Екатерина "Кити" Александровна Щербацкая): Dolly's younger sister and later Levin's wife, 18 years of age.
- Prince Alexander Shcherbatsky (Александр Щербацкий): Dolly and Kitty's father.
- Princess Shcherbatsky (no name or patronymic given): Dolly and Kitty's mother.
- Princess Elizaveta "Betsy" Tverskaya (Елизавета "Бетси" Тверская): Anna's wealthy, morally loose society friend and Vronsky's cousin.
- Countess Lidia (or Lydia) Ivanovna (Лидия Ивановна): leader of a high society circle that includes Karenin, and shuns Princess Betsy and her circle. She maintains an interest in Russian Orthodoxy, mysticism and spirituality.
- Countess Vronskaya: Vronsky's mother.
- Sergei "Seryozha" Alexeyich Karenin (Сергей "Серёжа" Каренин): Anna and Karenin's son, 8 years of age.
- Anna "Annie" (Анна "Ани"): Anna and Vronsky's daughter.
- Agafya Mikhailovna (Агафья Михайловнa): Levin's former nurse, now his trusted housekeeper.
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