Sergei Kurilov as Nicholas Miklouho-Maclay

Galina Grigoryeva as Margaret Robertson - wife of Miklouho-Maclay

Mikhail Astangov as Brandler - Doctor

Aleksey Maksimov as Robertson

Georgiy Budarov as Thomson

Valentina Kuindzhi as Lawrence

Weyland Rodd Sr. as Chief Oor - black friend Miklouho-Maclay

Lev Fenin as Governor

Robert Robinson as Malu

Jim Komogorov as Boy

Emmanuil Geller as Kafa

Arkadiy Arkadyev as Episodic role

I. Bragintseva as Episodic role

Nikolai Volkov St. as Correspondent

Aleksey Zubov as Chairman of the Geographical Society

B. Keropyan as Episodic role

V. Makovejsky as Episodic role

Leonid Pirogov as Professor Ozerov

V. Politimskiy as Episodic role

P. Orlovskiy as Episodic role

A. Savelyev as Episodic role

Fyodor Grigoryev as Episodic role

Vladimir Samoylov as Episodic role