Hawk of the Wilderness (1938) is a Republic movie serial based on the Kioga adventure novels written by pulp writer William L. Chester (1907–1971).

Kioga was a Tarzanesque white child raised on a lost island in the Arctic Circle, somewhere in northern Siberia, which was heated by thermal springs and unknown currents.

[2] Dr. Lincoln Rand, leading an expedition to an uncharted island in the Arctic Circle that he theorizes may be the ancestral home of all Native Americans, is shipwrecked.

Dr. Munro and company are rescued by Lincoln Rand Jr, now an adult Tarzan-like character known by the name "Kioga, Hawk of the Wilderness", who was raised to manhood on the island by Mokuyi.

During the serial's running time, Kioga protects the expedition from both the mutineers and a savage tribe of natives who inhabit the jungle led by a villainous shaman.

)[1] The burial of Kioga's servant Kias in the final chapter is regarded by historian William C. Cline as one of the "very few successful attempts at drama in serials.