With the introduction of two new clubs in the 2009/10, the Roar was no longer Queensland's sole representative, with the establishment of Gold Coast United and North Queensland Fury seeing the Club re-brand as Brisbane Roar.
The Club slipped out of the finals to a ninth-placed finish during the 2009/10 season during which Ange Postecoglou was appointed as Head Coach ahead of what would prove to be the club’s most successful period to date. The Roar Women finished third before being defeated in the grand final by Sydney FC.
The 2010/11 season was the Roar's most successful to date, finishing eight points clear at the top with just one defeat throughout the campaign to claim the Premier's Plate before winning the Club's maiden Hyundai A-League Championship in the most dramatic fashion possible.
After the scores were locked at 0-0 following 90 minutes against Central Coast Mariners on March 13, 2011, the match progressed to extra time. Brisbane conceded twice in quick succession and were facing a 2-0 defeat with just 17 minutes remaining on the clock.
But the players refused to give up and after clawing back one goal in the 116th minute, the Roar equalised with the final play of the game to force a penalty shootout which they eventually won 4-2.
The Roar Women also staked their claim as the best side in the country, claiming a second Championship and exacting revenge on Sydney FC for their Grand Final defeat a year earlier, claiming the title with a 2-1 win in the decider after finishing the regular season in second.
The on-field success continued for Brisbane Roar in the 2011/12 season with the club creating Australian sporting history by breaking a 74-year old national record for the most consecutive matches undefeated by playing 36 Hyundai A-League fixtures without a loss.
The club also participated in the AFC Champions League, Asia’s premier competition, for the first time in early 2012 – competing against some of the region’s best teams in the group stage.
On April 22, 2012, Brisbane Roar became the first Hyundai A-League team to successfully defend their Championship by again displaying their ‘never-say-die’ attitude and scoring two late goals to defeat Perth Glory 2-1 at Suncorp Stadium.
The Roar finished second on the Westfield W-League ladder and qualified for their fourth consecutive Grand Final, but were defeated 3-2 by Canberra United.
Following the departure of Ange Postecoglou at the end of the previous season, the Roar finished the 2012/13 campaign in fifth before being defeated by Western Sydney Wanderers in the Preliminary Final. The club competed in the AFC Champions League for a second time, losing on penalties to Thailand’s Buriram United in the play-off round.
After playing bridesmaid during the regular season for a number of consecutive seasons, the Roar Women were crowned 2012/13 Premiers, but couldn't progress past the first week of finals.