In March 2008, the AFL won the support of the league's 16 club presidents to establish an eighteenth side in Western Sydney.
The Giants represent the Greater Western Sydney area and Canberra.
The club played its first game in the league on 24 March 2012 at ANZ Stadium in the inaugural Sydney Derby against the Sydney Swans which they lost by 63 points.
On 12 May 2012 the club recorded its first win, defeating the Gold Coast Suns in a Round 7 match by 13.16 (94) to 9.13 (67).
The only other victory of the team's inaugural season was a 34-point win over Port Adelaide.
A Canberra logo is incorporated on its guernsey, with a separate Canberra guernsey being used for games at Manuka. They also played in a special guernsey as part of the centenary of Canberra celebrations.
Well There's A Big Big Sound
From the West of the town!
It's the sound of the mighty Giants!
You feel the ground is shaking,
The other teams are quaking in their boots before the Giants!
We take the longest strides
and the highest leaps.
We stronger than the rest!
We're the Greater Western Sydney Giants!
We're the biggest and the best, and we will!
Never surrender! We'll fight until the end!
We're greater than the rest!
Think Big. Live Big. Play Big.
Their training ground is located at Sydney Olympic Park , and was named Tom Wills Oval in 2013 in honour of Australian football pioneer Tom Wills, who was born in NSW and has family connections to Western Sydney.