Olaf Lubaszenko
— Tomek
Piotr Siwkiewicz
— Marcyś Siedlecki
Igor Przegrodzki
— Professor Olszyna
Małgorzata Piorun
— Ola Kos
Zdzisław Sośnierz
— Heniek
Stanisław Brudny
— Tomek's Grandfather
Robert Kowalski
— Maciek 'Andżulina' Ankiewicz
Robert Gonera
— Jacek 'Hefajstos' Zybiga
Zdzisław Kuźniar
— Kos
Monika Bolly
— Bronka
Jolanta Nowak
— Teacher
Marek Wrona
— 'Prymus'
Andrzej Mastalerz
— 'Palacz'
Hanna Skarżanka
— High School Principal
Halina Wyrodek
— Ela
Andrzej Mrozek
— Haneman
Jerzy Matysiak
— Speaker
Magdalena Curyk
— Magda
Simona Dulęba
— Student
Tomasz Majeran
Beata Wnęk-Malec
— Student
Joanna Górniak
— Girl at the Party (uncredited)
Beata Olga Kowalska
— Girl at the Party (uncredited)
Piotr Michalski
— Boy at the Party (uncredited)
Robert Moskwa
— Boy at the Party (uncredited)
Henryk Niebudek
— Teacher (uncredited)
Edwin Petrykat
— Marcyś' Father (uncredited)
Piotr Warszawski
— Boy at the Party (uncredited)