|Full name||Jakob Blåbjerg Mathiasen|
|Date of birth||11 January 1995|
|Place of birth||Aalborg, Denmark|
|Height||1.80 m (5 ft 11 in)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 03:35, 7 October 2017 (UTC)
‡ National team caps and goals correct as of 03:35, 7 October 2017 (UTC)
Blåbjerg joined AaB as a U14 player from Vejgaard Boldspilklub.
In September 2012, Blåbjerg signed his first full time contract and was to be promoted to the first team squad from the summer 2013. He got his Superliga debut for AaB in February 2013 against Silkeborg IF alongside Kasper Pedersen, as the four regular options for the centre-back position were all out with either injuries or bans. Blåbjerg was promoted to the first team squad in the summer 2013 at the age of 18, but did not play any games the whole season while AaB won the league and the Danish Cup.
In the following season Blåbjerg played 7 league matches in the first half year and 11 matches in the second half of the season. His performances were rewarded with a contract extension in the summer, which would keep him in the club until 2018. He was mostly used as a fullback.
In the 2015–16 season played 26 league matches. In the 2016–17 season he made 22 league appearances.
Blåbjerg studied energy on bachelor's degree at Aalborg University and reads to engineer. Aalborg University had a collaboration with AaB, so when Blåbjerg was in Dubai with the Danish U21 national team, he took a exam through his computer.
- "Archived copy". Archived from the original on 2013-10-16. Retrieved 2013-12-07.
- Ugens Superliga-talent – sæson 15/16, runde 7: Jakob Blåbjerg, AaB‚ dbold.dk, 1 September 2015
- AaB-talent på fuldtidskontrakt, bold.dk, 19 September 2012
- AaB forlænger med Jakob Blåbjerg, bold.dk, 12 June 2015
- AAU-STUDERENDE JAKOB BLÅBJERG FIK OL-CHANCE‚ aau.dk, 16 August 2016
- Jakob tager eksamen fra hotelværelse i Dubai, bold.dk, 22 January 2017