Johnny Weissmüller

Tarzan

Maureen O'Sullivan

Jane Parker

Johnny Sheffield

Boy

Ian Hunter

Austin Lancing

Henry Stephenson

Sir Thomas Lancing

Frieda Inescort

Mrs. Lancing

Henry Wilcoxon

Mr. 'Sandee' Sande

Laraine Day

Mrs. Richard Lancing

Morton Lowry

Richard Lancing

Gavin Muir

Pilot (uncredited)

Richard Thorpe