The 2018 AFL Grand Final was an Australian rules football game contested between the West Coast Eagles and the Collingwood Football Club at the Melbourne Cricket Ground on 29 September 2018. It was the 123rd annual grand final of the Australian Football League, staged to determine the premiers for the 2018 AFL season. The match, attended by 100,022 spectators, was won by West Coast by a margin of five points, marking the club's fourth premiership and first since 2006. West Coast's Luke Shuey won the Norm Smith Medal as the player judged best on ground.

The Melbourne Cricket Ground (MCG), also known locally as The 'G, is an Australian sports stadium located in Yarra Park, Melbourne, Victoria. Founded and managed by the Melbourne Cricket Club, with 95,000 seats and an additional 5,000 capacity in standing room for a total of just over 100,000 it is the largest stadium in the Southern Hemisphere, the 11th largest globally, and the second-largest cricket ground by capacity, after the Narendra Modi Stadium. The MCG is within walking distance of the city centre and is served by Richmond and Jolimont railway stations, as well as the route 70, route 75, and route 48 trams. It is adjacent to Melbourne Park and is part of the Melbourne Sports and Entertainment Precinct.