Following Bayern's 1-0 UEFA Champions League final win against Paris, nine teams and seven different clubs have claimed 'the treble', winning the European Cup, league title and biggest domestic cup in the same campaign: 1966/67: Celtic1971/72: Ajax 1987/88: PSV Eindhoven1998/99: Manchester United 2008/09: Barcelona2009/10: Inter Milan 2012/13: Bayern München2014/15: Barcelona2019/20: Bayern München

Bayern became only the second club to achieve this feat twice when they beat Paris in Lisbon, matching Barcelona's achievement.
Losing 2019/20 finalists Paris went into the decider having already racked up a domestic treble, winning the French top flight, French Cup and French League Cup. League Cups are played in a minority of countries, including England, France and Portugal. Celtic – in 1966/67 – remain the only team, to date, to have lifted a quadruple of European Cup, domestic league, domestic cup and domestic league cup.Source: uefa.com