From Jock Stein and Bill Struth to Walter Smith, Martin O’Neill, Brendan Rodgers and Steven Gerrard there have been many legendary and memorable managers to take charge of a side in the Old Firm derby.
Many bosses have etched their name into the history of both clubs not just for their success in winning league titles and trophies but also for their record in the Glasgow derby - but which of them hold the best records? Here, we have ranked those gaffers.
These are the 12 Celtic and Rangers managers, who were in charge of at least 10 Old Firm derby matches, with the best win rates in the fixture: