Jack Raymond Colback (born 24 October 1989) is an English professional footballer who plays as a defensive midfielder for EFL Championship club Queens Park Rangers.

After 115 Premier League appearances with Sunderland, his contract expired and he controversially moved to their local rivals, Newcastle United.

[8] He made his debut for Ipswich in a 3–3 draw with Shrewsbury Town after extra time in the League Cup, which was won 4–2 in a penalty shootout.

[12] He returned to Sunderland from a loan spell at Ipswich Town at the end of the 2009–10 Championship season and made his Premier League debut as a 76th-minute substitute against Wolverhampton Wanderers.

He then came off the bench as Sunderland drew 1–1 against local rivals and the team Colback supported as a child, Newcastle United, on 16 January.

[20] Colback was deployed at left back on New Year's Day 2012 against Manchester City, and helped Sunderland to a surprise victory against the Premier League leaders.

He again played at left back in Sunderland's 4–2 win at Wigan two days later, where he sustained a knee injury which ruled him out for a few weeks.

[27] With his contract about to expire at the end of the 2013–14 season, then-manager Paolo Di Canio urged to Colback to make a decision on his future at Sunderland.

[28] In November, Colback confirmed that talks of a new deal had started after initially rejecting a new contract in the summer under the management of Di Canio.

[36] Colback made his competitive debut on 17 August as Newcastle began the season with a 2–0 defeat at home to Manchester City, playing the full 90 minutes.

[44] After joining Forest, he accused Newcastle United manager Rafael Benítez of disrespecting him during his stint at the club, claiming that he was "treated more like a number than a human being".

[45] That July, Colback returned to Forest on a season-long loan, with an obligation to a permanent transfer at the end of the league campaign.

[53] Colback has received one cap for the England under-20 team, he played in a 2–0 friendly win against Italy at Loftus Road in March 2009.

[54] On 28 August 2014, Colback received his first call-up to the senior team for the matches against Norway and Switzerland,[55] but had to withdraw from the squad with a calf injury.