Cassidy of Bar 20

William Boyd

as Hopalong Cassidy

Russell Hayden

as Lucky Jenkins

Frank Darien

as Pappy

Nora Lane

as Nora Blake

Robert Fiske

as Clay Allison

Carleton Young

as Jeff Caffrey

Margaret Marquis

as Mary Dillon

John Elliott

as Tom Dillon

Gertrude Hoffmann

as Ma Caffrey

Ed Cassidy

as Sheriff Hawley

Gordon Hart

as Judge Belcher

Charles Murphy

as Tex, leader of Texas gang

John Beach

as Bar 20 Cowhand in Check Shirt (bit)

Wen Wright

as Bar 20 Cowhand (extra)

Jim Toney

as Bar 20 Cowhand (extra)

Bud McClure

as Texas Outlaw (extra)

George Plues

as Texas Outlaw (extra)

Dick Botiller

as Townsman (extra)

Roy Bucko

as Townsman (extra)

Tom Smith

as Trial Spectator (extra)