Henry M. Stanley

Spencer Tracy

Dr. David Livingstone (as Sir Cedric Hardwicke)

Cedric Hardwicke

Eve Kingsley

Nancy Kelly

Dr. David Livingstone

Sir Cedric Hardwicke

Gareth Tyce

Richard Greene

Jeff Slocum

Walter Brennan

Lord Tyce

Charles Coburn

James Gordon Bennett, Jr.

Henry Hull

John Kingsley

Henry Travers

Sir John Gresham

Miles Mander

Mr. Cranston

David Torrence

David Webb

Paul Stanton

Sir Frederick Holcomb

Holmes Herbert

Sir Oliver French

C. Montague Shaw

Sir Henry Forrester

Brandon Hurst

Hassan

Hassan Said

Colonel Grimes

Paul Harvey

Peace Commissioner

Russell Hicks

Peace Commissioner

Frank Dae

Zucco

Ernest Baskett

Sergeant

William E. 'Red' Blair

Morehead

Joseph Crehan

Sir Francis Vane

Clarence Derwent

Bongo

Everett Brown

Carmichael

Robert Middlemass

Senator

Frank Jaquet

Geographical Society Delegate

Bobby Burns

Mombay

Jack Clisby

Mace

William Williams

Corporal

Tom Coleman

Newspaperman in Office

Vernon Dent

Bennett's Secretary

Emmett Vogan

Committeeman

James McNamara

Chuma

William Dunn

Chuma

William R. Dunn

Newspaperman at Water Barrel

Harry Harvey

Susi

Emmett Smith

Chewing Native

Darby Jones

Lieutenant

Richard Stanley

Reporter at Dock

Eric Lonsdale

Messenger

Anthony Marsh

Newspaperman with Pills

Frank Orth

Billy Watson

Billy Watson

Reporter at Dock

Clive Morgan

Reporter at Dock

Imboden Parrish

Messenger

Speirs Ruskell

Lieutenant

Dick Stanley

Captain

Harry Strang

Messenger

F. Philip Sylvestre

Mace

William B. Williams