 Damian DamięckiKarlik Rudniok | Karlik Rudniok |
 Maciej DamięckiFranek Miksa | Franek Miksa |
| MMichał BustamanteStefan Gola | Stefan Gola |
| ŁŁukasz ŻuławskiKryza | Kryza |
 Ludwik BenoitMiksa (Franek's father) | Miksa (Franek's father) |
| BBarbara FijewskaMiksina (Franek's mother) | Miksina (Franek's mother) |
 Gustaw HoloubekSądej | Sądej |
 Zbigniew JózefowiczRudniok (Karlik's father) | Rudniok (Karlik's father) |
 Jan KoecherBolesławiec | Bolesławiec |
 Stanisław MilskiHeadmaster Zajączkowski | Headmaster Zajączkowski |
 Kazimierz OpalińskiKropa | Kropa |
 Jarema StępowskiSztelmach | Sztelmach |
| KKazimierz SzubertKupść | Kupść |
| SSławomir OszczygiełNot listed | Not listed |
| AArkadiusz HofferStachurka | Stachurka |
| JJerzy ŻołnierkiewiczNot listed | Not listed |
| WWłodzimierz ŁuszczykiewiczNot listed | Not listed |
| ZZofia BohdziewiczNot listed | Not listed |
| MMaria SzaflarskaNot listed | Not listed |
| MMaciej CicheckiNot listed | Not listed |
 Zbigniew CybulskiMiner (uncredited) | Miner (uncredited) |
 Henryk HunkoMan with a Flag (uncredited) | Man with a Flag (uncredited) |
 Ignacy MachowskiSchool Inspector (uncredited) | School Inspector (uncredited) |
 Irena SzymkiewiczWoman in an Office (uncredited) | Woman in an Office (uncredited) |