Winnipeg Blue Bombers with 24 appearances, followed by Edmonton (22) and Toronto (also 22).
Winnipeg Blue Bombers with 10 (last in 1990) after Toronto Argonauts' 16 and Edmonton Eskimos' 13.
The Edmonton Eskimos beat the Ottawa Rough Riders on a last-second field goal. Edmonton was down 19 points at the half, but came back to win in one of the most exciting Grey Cup games.
The Edmonton Eskimos? Nope. The Eskies have 13 Grey Cup victories, all since 1954, but the Toronto Argonauts have 16 wins, going back to 1914. Ten of the Argo wins came between 1914 and 1952, including a threepeat in '45, '46 & '47. The Green and Gold do, however, have the most Grey Cup appearances, with 22. And I'm not counting the 2 losses in 1921 and 1922, because it was not the same team, just a team with the same name.
Italy comes second after Brazil with four world cups.
The Winnipeg Blue Bombers have won 10 Grey Cups in total. They won the championship in each of the following years: 1935, 1939, 1941, 1958, 1959, 1961, 1962, 1984, 1988, and 1990. For scores follow this link: http://www.bluebombers.com/page/grey_cups The Winnipeg Blue Bombers also have the most Grey Cup appearances of any team at 23.
Toronto Argonauts- 16 Grey Cups as of 2012.
Edmonton Oilers - 5 (1984, 1985, 1987, 1988, 1990)
Toronto
It is Italy with four world cups.
BC Lions have won the Grey Cup six times, most recently in 2011.
Italy come second after Brazil, with 4 world cups.