Who is the most succesful franchise of all major sports? 1. Yankees (27 WS titles and 40 pennants) 2. Lakers( 15 championships 30 finals appearances) 3. Celtics (17 championships 20 finals appearances) 4. Canadiens (24 Stanley Cups and 26 conference championships) I couldn't really decide to include for the NFL, I guess you can make an argument between the Packers or the Steelers. Thoughts?