Jadwiga Smosarska as Barbara Radziwiłłówna

Jan Kurnakowicz as Stolnik Kieżgajłło

Ludwik Sempoliński as Poseł rakuski

Witold Zacharewicz as Zygmunt II August

Helena Buczyńska as Wujna Barbary

Jerzy Leszczyński as Leszczyński

Stefan Hnydziński as Wirszyłł

Lena Żelichowska as Faworyta królewska

Józef Maliszewski as Prymas Dzieżgowski

Janusz Ziejewski as Dowoyna

Zygmunt Chmielewski as Radziwiłł Czarny

Gustaw Buszyński as Radziwiłł Rudy

Leon Łuszczewski as Aliphio

Kazimierz Opaliński as

Michał Halicz as