Olaf Lubaszenko as Tomek

Piotr Siwkiewicz as Marcyś Siedlecki

Igor Przegrodzki as Professor Olszyna

Małgorzata Piorun as Ola Kos

Zdzisław Sośnierz as Heniek

Stanisław Brudny as Tomek's Grandfather

Robert Kowalski as Maciek 'Andżulina' Ankiewicz

Robert Gonera as Jacek 'Hefajstos' Zybiga

Zdzisław Kuźniar as Kos

Monika Bolly as Bronka

Jolanta Nowak as Teacher

Marek Wrona as 'Prymus'

Andrzej Mastalerz as 'Palacz'

Hanna Skarżanka as High School Principal

Halina Wyrodek as Ela

Andrzej Mrozek as Haneman

Jerzy Matysiak as Speaker

Magdalena Curyk as Magda

Simona Dulęba as Student

Tomasz Majeran as

Beata Wnęk-Malec as Student

Joanna Górniak as Girl at the Party (uncredited)

Beata Olga Kowalska as Girl at the Party (uncredited)

Piotr Michalski as Boy at the Party (uncredited)

Robert Moskwa as Boy at the Party (uncredited)

Henryk Niebudek as Teacher (uncredited)

Edwin Petrykat as Marcyś' Father (uncredited)

Piotr Warszawski as Boy at the Party (uncredited)