Ray Milland as Hugh "Bulldog" Drummond

Guy Standing as Reginald Nielson

Heather Angel as Phyllis Clavering

Reginald Denny as Algy Longworth

Porter Hall as Norman Merridew

Fay Holden as Natalie Merridew Seldon

E. E. Clive as "Tenny" Tennison

Walter Kingsford as "Professor" Stanton

P.J. Kelly as Stiles, Butler

Charles McNaughton as Chief Constable Higgins

Clyde Cook as Constable Alf

Frank Elliott as Bailey

David Clyde as Gower

Doris Lloyd as Nurse

Robert Adair as Woolsey

J. Gunnis Davis as Attendant

Bobby Hale as Attendant (uncredited)

Barry Macollum as Blodgson

Henry Mowbray as Bobby

John Power as Customs Officer

Pat Somerset as Reporter

Ernie Stanton as Reporter

Colin Tapley as Dixon

Zeffie Tilbury as Drunk in Jail Cell