The 90th Grey Cup was the 2002 Canadian Football League championship game played between the Edmonton Eskimos and the Montreal Alouettes on November 24 at Commonwealth Stadium, in Edmonton, Alberta. The Alouettes defeated the Eskimos 25–16 in the first all-Canadian CFL championship game to feature the host team since 1983.

It was Don Matthews' fifth Grey Cup title as a head coach, tying him with Lew Hayman, Frank Clair and Hugh Campbell for the all-time record.

This was last Grey Cup game to be played on natural grass in Edmonton. By the time Edmonton hosted its next Grey Cup game in 2010, its stadium had switched over to artificial turf. The Grey Cup would not be played on grass again until 2016 at Toronto's BMO Field. The league introduced its new logo four days before this game; it appeared on patches on the team's jerseys for this game.

This was the Alouettes first Grey Cup victory in 25 years, and first since their 1996 re-activation. The Grey Cup victory parade, held 2 days later in downtown Montreal attracted 250,000 fans.

Montreal Alouettes (25) - TDs, Pat Woodcock, Jeremaine Copeland (2); FGs Terry Baker (1); cons., (3); singles, Baker (1).

Edmonton Eskimos (16) - TDs, Rick Walters, Ed Hervey; FGs, Sean Fleming (1); cons., Fleming (1).

First Quarter
MTL – Single Baker 68 yard punt went through the end zone 4:34 1 - 0 MTL
Second Quarter
MTL – TD Woodcock 99 pass from Calvillo (Baker convert) 1:58 8 - 0 MTL
MTL – FG Baker 42 13:45 11 - 0 MTL
Third Quarter
EDM – TD Walters 17 pass from Ray (Fleming convert) 2:58 11 - 7 MTL
EDM – FG Fleming 13 8:54 11 - 10 MTL
Fourth Quarter
MTL – TD Copeland 47 pass from Calvillo (Baker convert) 3:07 18 - 10 MTL
EDM – TD Hervey 17 pass from Ray (convert failed) 14:41 18 - 16 MTL
MTL – TD Copeland 47 kick-off return (Baker convert) 14:48 25 - 16 MTL

A Grey Cup rivalry which was born in the 1950s (Edmonton and Montreal have met in 11 Grey Cup clashes) and intensified in the 1970s re-emerged in the new century on a frozen field at Commonwealth Stadium in Edmonton.