Julia Łuczkowska

Ludka Balwikówna

Andrzej Pstrąg

Marek Korcikowski

Zofia Truszkowska

Ludka's Mother

Anna Seniuk

Eliza

Maria Homerska

Professor Mareszowa

Jan Machulski

Ludka's Neighbour

Barbara Ludwiżanka

Ludka's Aunt

Janusz Bukowski

Stefan

Aleksander Sewruk

Ludka's Father

Witold Skaruch

Kasperski

Agnieszka Fitkau

Stefan's Lover

Małgorzata Lorentowicz

Parents' Committee Member

Tadeusz Pluciński

Neighbour's Business Partner

Ewa Mirowska

Store Clerk

Iwona Słoczyńska

Teacher

Janina Borońska

Ludka Balwikówna (voice)

Zbigniew Płoszaj

Jerzy Zygmunt Nowak

Institute Assistant (uncredited)

Elżbieta Starostecka

Jadzia (voice) (uncredited)