James Mason
— Trigorin
Vanessa Redgrave
— Nina
Simone Signoret
— Irina Arkadina
David Warner
— Konstantin Treplev
Harry Andrews
— Pjotr Nikolayevich Sorin
Denholm Elliott
— Dr. Yevgeny Dorn
Eileen Herlie
— Polina
Alfred Lynch
— Semyon Medvedenko
Ronald Radd
— Shamraev
Kathleen Widdoes
— Masha
Frej Lindqvist
— Yakov (uncredited)
Karen Miller
— Housemaid (uncredited)