Walter Abel

D'Artagnan

Margot Grahame

Milady de Winter

Paul Lukas

Athos

Moroni Olsen

Porthos

Onslow Stevens

Aramis

Heather Angel

Constance

Ian Keith

Count de Rochefort

Rosamond Pinchot

Queen Anne

John Qualen

Planchet

Ralph Forbes

Duke of Buckingham

Nigel De Brulier

Richelieu

Murray Kinnell

Bernajou

Lumsden Hare

De Treville

Miles Mander

King Louis XIII

Lionel Belmore

Inn Proprietor

Stanley Blystone

Villard

Wade Boteler

Peylerand

Ralph Faulkner

Jussac

Frank Lackteen

Paris Gate Watch

Ferdinand Munier

First Innkeeper

Russ Powell

The Shepherd

Tom Ricketts

Pigeon Receiver

Cliff Saum

Palace Guard

Lucille Ball

(uncredited)

Viola Moore

(uncredited)