Europa League holders Manchester United take on Champions League winners Real Madrid in the UEFA Super Cup this Tuesday, live on talkSPORT.
They are two of the biggest, if not the biggest clubs in world football, thanks in no small part to their European success.
But which club has won the most UEFA club competitions?
They vary in prestige, with the Super Cup a notch down from the Europa League, which in turn cannot match the glory of winning the Champions League.
Nonetheless, we have tallied up club successes in UEFA competitions, and ranked teams in order, based first on the total number of trophies they have won, then separating them further if necessary by the prestige of the tournaments won.