Dr. Jack
- Jahr: 1922
- Land: United States of America
- Genre: Komödie, Liebesfilm
- Studio: Hal Roach Studios
- Stichwort: rivalry, lawyer, doctor, poker game, invalid, escaped mental patient, fake illness
- Direktor: Sam Taylor, Fred C. Newmeyer
- Besetzung: Harold Lloyd, Mildred Davis, John T. Prince, Eric Mayne, C. Norman Hammond, Jackie Condon