Corey Parker is a former Australian professional rugby league footballer who played for the Brisbane Broncos in the NRL. A Queensland State of Origin and Australia international representative, Parker played in the lock, second-row and prop positions. Parker played his entire professional career at one club, with whom he won the 2006 NRL Premiership. He also fulfilled goal kicking duties for the Broncos. Over his career, Parker scored 1,218 points to become the greatest point-scorer in Broncos history and move past David Furner to become the third-most prolific point-scoring forward in the game's history.

Parker made his NRL debut in 2001 with the Broncos, scoring a try in his first match. At some point, he weighed 108 kilos and played prop. The same year, Parker and Brent Tate both considered offers from the Canterbury Bulldogs, meeting with club officials in secret. Coach Wayne Bennett found out about the meeting, and dropped both Parker and Tate to reserve grade as a result. Parker was selected to represent Queensland as an interchange for games II and III of the 2004 State of Origin series and game III of the 2005 State of Origin series.

Parker was the highest point-scorer for the Broncos with a total of 142 points in 2006. He was selected to play from the interchange bench in Brisbane's victory in the 2006 NRL Grand Final. In the Broncos' first match of the NRL season 2008, Parker broke the Broncos' club record for most goals in a match, kicking ten from ten. For the 2009 NRL season new Broncos coach Ivan Henjak moved Parker to lock. This proved a success as in April that year he was named in the preliminary 25-man squad to represent Queensland in the opening State of Origin match for 2009.

On 14 May 2010, Parker played his 200th game for the Broncos, becoming the second youngest player to reach the milestone for the club. Parker played all three games of the 2013 State of Origin series in which Queensland extended their record for consecutive series victories to eight. Parker had made the most offloads out of all players in the 2013 NRL season. Parker was named the 2013 Brisbane Broncos season's player of the year.

In the post season, he travelled to Europe with the Australian national team for the 2013 World Cup, helping them reclaim it. In 2013 Corey Parker was awarded International Lock of the Year, The Player's Player award, Most Consistent award, the Best Forward award, Dally M Lock of the Year, and Rugby League Week Player of The Year. Against the Eels in round 5 of 2014, Parker became the third ever Bronco to reach 1000 points, after Darren Lockyer and Michael De Vere. He made his return from injury in Game III of State of Origin, Parker received the Man of the Match accolade. Peter Sterling quoted Parker's Game III as being the best performance by a forward in a State of Origin game he has seen.

In Round 1 of the 2015 NRL season, Corey Parker played his 300th NRL game, against the South Sydney Rabbitohs. This made Parker the 22nd NRL player to play 300 games. After the Queensland Maroons 52–6 victory against the New South Wales Blues in the 2015 State of Origin to win the series, Parker was awarded the Wally Lewis Medal. In Round 22 of the 2015 NRL season against the Canterbury-Bankstown Bulldogs, Parker succeeded Darren Lockyer as the Broncos' highest ever points scorer. Within the weeks leading up to the 2016 NRL season, coach Wayne Bennett announced Parker as the Broncos captain. In June 2016, Parker announced that he would retire from the NRL at years end.