Zinoviy Gerdt as Doctor Aybolit (voice)

Semyon Farada as Barmaley (voice)

Mariya Mironova as Barbara [Varvara] (voice)

Vsevolod Abdulov as Parrot (voice)

Lyudmila Ivanova as (voice)

Yevhen Papernyi as "One-eyed" / Doctor Aybolit (voice)

Heorhii Kyshko as (voice)

Viktor Andriienko as (voice)

Valerii Chyhliaiev as (voice)

Sergei Yursky as Doctor Aybolit (voice) (uncredited)