Knudsen playing for Ipswich Town in 2015
|Full name||Jonas Hjort Knudsen|
|Date of birth||16 September 1992|
|Place of birth||Esbjerg, Denmark|
|Height||1.87 m (6 ft 2 in)|
|Playing position||Left back|
* Senior club appearances and goals counted for the domestic league only and correct as of 11 November 2019|
‡ National team caps and goals correct as of 16 October 2019
In November 2009 he signed his first professional contract with Esbjerg, and following the winter break of the Danish Superliga, he made his professional debut in a 0–4 home loss against Randers FC, becoming the second youngest Esbjerg debutant ever second only to Andreas Sørensen who made his debut aged 16 years.
Following the departure of Kevin Conboy to NEC, Knudsen established himself as the first choice left back for the club. In the 2012–13 season, the Esbjerg team finished fourth in the Danish Superliga and won the Danish Cup, and Knudsen was given a new contract in April 2013.
Knudsen signed for Ipswich Town on 31 July 2015 on a three-year deal. Knudsen went on to make 43 appearances, scoring 1 goal during his first season at Portman Road.
In Jonas Knudsen's second season, he memorably scored in both East Anglian derbies which both finished 1–1.
On 21 December 2017, Ipswich took up the option to extend Knudsen's contract until 2019. In January 2019 he informed the club that he would not be signing a new contract, and he was released at the end of the 2018–19 season following the expiration of his contract.
- As of match played 11 November 2019
|Club||Season||League||National Cup||League Cup||Continental||Total|
- Appearances in UEFA Europa League
- "EFL: Retained list: 2015/16" (PDF). English Football League. p. 27. Archived from the original (PDF) on 2 December 2016. Retrieved 29 June 2016.
- "2018 FIFA World Cup: List of players" (PDF). FIFA. 18 June 2018. p. 8.
- "Jonas Knudsen: Ipswich Town signing 'the new Rory Delap'". BBC Sport. 3 August 2015. Retrieved 3 August 2015.
- "Esbjerg skriver med talentfuld back"
- "Tre unge debutanter satte klubrekorder"
- "Jonas Knudsen: Ipswich Town sign Denmark defender". BBC Sport. 31 July 2015. Retrieved 31 July 2015.
- Warren, Andy. "Town take up option to extend 'excellent' Knudsen's deal". East Anglian Daily Times. Retrieved 7 August 2018.
- "Gerken Included in Released Blues". Ipswich Town Official Website. 20 May 2019. Retrieved 20 May 2019.
- "J.Knudsen". scoresway.com. Retrieved 19 August 2019.
- "Games played by Jonas Knudsen in 2012/2013". Soccerbase. Centurycomm. Retrieved 21 July 2017.
- "Games played by Jonas Knudsen in 2013/2014". Soccerbase. Centurycomm. Retrieved 21 July 2017.
- "Games played by Jonas Knudsen in 2014/2015". Soccerbase. Centurycomm. Retrieved 21 July 2017.
- "Games played by Jonas Knudsen in 2015/2016". Soccerbase. Centurycomm. Retrieved 21 July 2017.
- "Games played by Jonas Knudsen in 2016/2017". Soccerbase. Centurycomm. Retrieved 21 July 2017.
- "Games played by Jonas Knudsen in 2017/2018". Soccerbase. Centurycomm. Retrieved 21 July 2017.
- "Games played by Jonas Knudsen in 2018/2019". Soccerbase. Centurycomm. Retrieved 21 July 2017.
- Jonas Knudsen at National-Football-Teams.com