Collingwood have lost more finals than any other afl team when they loose is referred to as the colliwobbles
That's one way to look at it, the other way is that they are the only team good enough to play in so many finals, also please don't leave out they have won the most finals! But they have not won the most Grand finals; that honour belongs to both Carlton and Essendon.
Collingwood have lost the most.
Around 25 losing Grand Finals.
Michael Tuck (Hawthorn) 7 premierships
During the 1950's and 1960's, Norm Smith coached the Melbourne Football Club to 6 Premierships over 11 seasons, with 11 consecutive finals appearances! Those were the days when only 4 teams made the finals. None other has even approached that kind of record.
Which AFL team has won 10 premierships