- Irina Nikolayevna Arkadina – an actress, married surname Trepleva
- Konstantin Gavrilovich Treplev – Irina's son, a young man
- Pyotr Nikolayevich Sorin – Irina's brother, owner of the country estate
- Nina Mikhailovna Zarechnaya – a young woman, the daughter of a rich landowner
- Ilya Afanasyevich Shamrayev – a retired lieutenant and the manager of Sorin's estate
- Polina Andreyevna – Shamrayev's wife
- Masha – her daughter
- Boris Alexeyevich Trigorin – a novelist
- Yevgeny Sergeyevich Dorn – a doctor
- Semyon Semyonovich Medvedenko – a teacher in love with Masha.
- Yakov – a workman
- Cook
- Maid
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