The West Australian Football League is an Australian rules football league based in Perth, Western Australia. The league currently consists of ten teams, which play each other in a 20-round season usually lasting from April to September, with the top five teams playing off in a finals series, culminating in a Grand Final. The league also runs reserves, colts (under-19) and women's competitions.

Primarily in Australian sports, a grand final is a game that decides a sports league's premiership winning team, i.e. the conclusive game of a finals series. Synonymous with a championship game in North American sports, grand finals have become a significant part of Australian culture. The earliest leagues to feature a grand final were in Australian rules football, followed soon after by rugby league. Currently the largest grand finals are in the Australian Football League (AFL) and National Rugby League (NRL). Their popularity influenced other competitions such as soccer's A-League Men and A-League Women, the National Basketball League, Suncorp Super Netball and European rugby league's Super League to adopt grand finals as well. Most grand finals involve a prestigious award for the player voted best on field.