Julia Łuczkowska as Ludka Balwikówna

Andrzej Pstrąg as Marek Korcikowski

Zofia Truszkowska as Ludka's Mother

Anna Seniuk as Eliza

Maria Homerska as Professor Mareszowa

Jan Machulski as Ludka's Neighbour

Barbara Ludwiżanka as Ludka's Aunt

Janusz Bukowski as Stefan

Aleksander Sewruk as Ludka's Father

Witold Skaruch as Kasperski

Agnieszka Fitkau as Stefan's Lover

Małgorzata Lorentowicz as Parents' Committee Member

Tadeusz Pluciński as Neighbour's Business Partner

Ewa Mirowska as Store Clerk

Iwona Słoczyńska as Teacher

Janina Borońska as Ludka Balwikówna (voice)

Zbigniew Płoszaj as

Jerzy Zygmunt Nowak as Institute Assistant (uncredited)

Elżbieta Starostecka as Jadzia (voice) (uncredited)