- Country: USA
- Genres: Biography, Drama, Sport
- Release: 1945-11-15
- Director: Frank Tuttle
- Writers: James Edward Grant
- Language: English
- Stars: Linda Darnell , Barbara Britton , Greg McClure , Otto Kruger , Wallace Ford , George Mathews , Robert Barrat (1889–1970) , J.M. Kerrigan , Joel Friedkin , Simon Semenoff
- Runtime: 96 min
- Awards: N/A
- AKA: Quando os Homens São Homens (Brazil) , O Grande Campeão (Portugal, Portuguese Republic) , The Great John L. (United States of America) , Den store John L. Sullivan (Sweden) , El coloso de Boston (Spain) , Le grand John (France, French Republic) , The Great John L. , El gran campeón (Mexico) , O Grande Sullivan (Brazil) , Il gigante di Boston (Italy) , El gigante de Boston (Venezuela) , A Man Called Sullivan (United Kingdom) , Hans værste modstander (Denmark) , O daimon tou pathous (Greece)
- Plot: Women in the life of prizefighter John L. Sullivan.
- IMDB:tt0037750
The Great John L. Cast · · · ALL
Frank Tuttle
Director
Linda Darnell
Anne Livingston
Greg McClure
John L. Sullivan
Barbara Britton
Kathy Harkness
Otto Kruger
Richard Martin
Wallace Ford
McManus
George Mathews
John Flood
Robert Barrat
(1889–1970)
Billy Muldoon
Joel Friedkin
Michael Sullivan
Simon Semenoff
Mons. Claire
Harry Crocker
Arthur Brisbane
Rory Calhoun
James J. 'Gentleman Jim' Corbett
J.M. Kerrigan
Father O'Malley
Fritz Feld
Claire's manager