John Barrymore

Colonel Neilson

John Howard

Captain Hugh 'Bulldog' Drummond

Louise Campbell

Phyllis Clavering

Reginald Denny

Algy Longworth

E. E. Clive

Tenny

Porter Hall

Dr. Botulian

Elizabeth Patterson

Aunt Blanche

Nydia Westman

Gwen Longworth

Halliwell Hobbes

Prof. Bernard Goodman

Matthew Boulton

Sir Raymond Blantyre

Zeffie Tilbury

Mrs. Weevens

David Clyde

Constable McThane

Clyde Cook

Constable Sacker

Michael Brooke

Anthony Greer

Gregory Gaye

Raoul

Jimmy Aubrey

Mechanic

Frank Baker

Constable Announcer

William Haade

Botulian's Driver

Forrester Harvey

Bus Garage Man

Torben Meyer

Hoffman

John Sutton

Doctor

Maude Fealy

Spinster

Margaret Fealy

Spinster

James P. Burtis

Sergeant

Douglas Gordon

Constable