Johnny Weissmüller
Tarzan

Maureen O'Sullivan
Jane

Johnny Sheffield
Boy

Virginia Grey
Connie Beach

Charles Bickford
Buck Rand

Paul Kelly
Jimmie Shields

Chill Wills
Manchester Montford

Cy Kendall
Col. Ralph Sergeant

Russell Hicks
Judge Abbotson

Howard Hickman
Tarzan's Lawyer Blake Norton

Charles Lane
Sargent's Lawyer Gould Beaton

Miles Mander
Portmaster

William Forrest
Inspector at Airport (uncredited)

Mantan Moreland
Sam, the Nightclub Janitor (uncredited)

William Tannen
Mike, an Airport Clerk (uncredited)

Eddy Chandler
Bailiff (uncredited)

Marjorie Deanne
Cigarette Girl (uncredited)

Darby Jones
Swahili Chief (uncredited)

Patrick McVey
Policeman (uncredited)

Dorothy Morris
Hat Check Girl (uncredited)