The Great John L. is a 1945 American biographical drama film directed by Frank Tuttle and written by James Edward Grant. The film stars Linda Darnell, Barbara Britton, Greg McClure, Otto Kruger, Wallace Ford and George Mathews. The film was released on May 25, 1945, by United Artists.

Plot

In 1880, when bareknuckle fighting is still condoned, John L. Sullivan chooses boxing over baseball and becomes known as "the Boston Strong Boy" after his victory over established prizefighter John Flood.