Most European Cup and UEFA Champions League Final Losses

Juventus 7 of 9 appearances

Bayern Munich 5 of 11
Benfica 5 of 7

AC Milan 4 of 11

Atletico Madrid 3 of 3
Barcelona 3 of 8
Liverpool 3 of 9
Real Madrid 3 of 16

Ajax 2 of 6
Inter Milan 2 of 5
Manchester United 2 of 5
Reims 2 of 2
Valencia 2 of 2

Borussia Dortmund 1 of 2
Celtic 1 of 2
Chelsea 1 of 2
Hamburg 1 of 2
Marseille 1 of 2
Steaua Bucharest 1 of 2

Fiorentina 1 of 1
Eintracht Frankfurt 1 of 1
Partizan Belgrade 1 of 1
Panathinaikos 1 of 1
Leeds United 1 of 1
Saint-Étienne 1 of 1
Borussia Mönchengladbach 1 of 1
Club Brugge 1 of 1
Malmö 1 of 1
Roma 1 of 1
Sampdoria 1 of 1
Bayer Leverkusen 1 of 1
Monaco 1 of 1
Arsenal 1 of 1
Tottenham Hotspur 1 of 1
Paris St Germain 1 of 1

Sources: UEFA, Wikipedia