Jack Dempsey's Broadway Restaurant, known popularly as Jack Dempsey's, was a restaurant located on Broadway between 49th and 50th streets in Manhattan, New York. Owned by world Heavyweight boxing champion, Jack Dempsey, it was considered by many as an American institution. The restaurant originally opened for business as Jack Dempsey's Restaurant on Eighth Avenue and 50th Street, directly across from the third Madison Square Garden, in 1935. Most nights would find Dempsey's famous proprietor on hand to greet guests, sign autographs, pose for pictures, and hold court with people from all walks of life.