- HD 1080
- Runtime: 60m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Sam Taylor, Fred C. Newmeyer
- Stars: Harold Lloyd, Mildred Davis, John T. Prince, Eric Mayne, C. Norman Hammond
- keywords: rivalry, lawyer, doctor, poker game, invalid, escaped mental patient, fake illness
- Production_studio: Hal Roach Studios
- Slogan: If you are crying for a laugh—visit Dr. Jack! If you need a new joy thrill, consult Dr. Jack. If you want to laugh until you are weak—see Dr. Jack.
- providers: Criterion Channel
- The Dr. Jack is featured in the top rankings of 1922
- #3 in Top Comedy Movies of 1922
- #1 in Top Romance Movies of 1922
Country doctor Jack Jackson is called in to treat the Sick-Little-Well-Girl, who has been making Dr. Saulsbourg and his sanitarium very rich after years of unsuccessful treatment.