Andrzej Kozak as Andrzej "Penguin"

Krystyna Konarska as Baśka Oraczewska

Zbigniew Cybulski as Łukasz

Janina Szydłowska as Irena, Pingwin's Mother

Elżbieta Święcicka as Bączkowa, Adaś's Mother

Mieczysław Milecki as Jan, Pingwin's Father

Andrzej Szczepkowski as Architect Paweł Bączek, Adaś's Father

Wojciech Duryasz as Adaś Bączek

Irena Karel as Party Attendant

Emilia Krakowska as Girl in the Phone Booth

Carmen Richard as Party Attendant

Małgorzata Rogacka as Julita, Girl in the Phone Booth

Jerzy Kozakiewicz as Thug Beating Pingwin

Mirosław Majchrowski as Thug Beating Pingwin

Jerzy Trojan as Student

Stanisław Tym as Osetnik, Bączek's Friend

Krystyna Borowicz as Customer Asking for Eggs (uncredited)

Maciej Damięcki as Thug Beating Pingwin (uncredited)

Jerzy Karaszkiewicz as Man at a Staircase (uncredited)

Krzysztof Kowalewski as Bus Passenger (uncredited)

Juliusz Lubicz-Lisowski as Florist (uncredited)

Zofia Merle as Shopkeeper (uncredited)

Adam Perzyk as Man by a Beer Both (uncredited)

Andrzej Siedlecki as Boy on the Staircase

Włodzimierz Stępiński as Man by a Beer Booth (uncredited)

Kalina Jędrusik as Baśka Oraczewska (voice) (uncredited)