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)