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The 2015 National Premier Leagues WA season was played over 22 rounds. This year there was no Finals series, instead with Bayswater City – as the Premiers – competing in the 2015 National Premier Leagues Finals.
The 2015 WA State League Division 1 Season is the second tier domestic football competition in Western Australia. The 12 teams play each other twice, for a total of 22 rounds. Mandurah City were Champions, but didn't meet all of the Football West eligibility criteria to be promoted to the 2016 NPL competition.
The 2015 WA State League Division 2 Season is the third tier domestic football competition in Western Australia. The 12 teams play each other twice, for a total of 22 rounds. The top team at the end of the year is promoted to the 2016 WA State League Division 1.
The highest tier domestic football competition in Western Australia is known as the BankWest Women's State League Premier Division for sponsorship reasons. The 8 teams play each other three times, for a total of 21 rounds, and with a promotion/relegation system for the bottom team with the State League Division 1. Beckenham Angels won the Women's State Cup.
Western Australian soccer clubs competed in 2015 for the Football West State Cup, known that year as the Cool Ridge Cup for sponsorship reasons. Clubs entered from the National Premier Leagues WA, the two divisions of the State League, a limited number of teams from various divisions of the 2015 Sunday League competition, and from regional teams invited from the South West, Goldfields, Great Southern and Midwest regions.
This knockout competition was won by Sorrento, their 3rd title.