Julian Börner (born 21 January 1991) is a German professional footballer who plays as a defender.

[4][5] He made his debut for the club and only appearance of the 2009–10 season as a substitute in a 3–1 home defeat to Greuther Fürth on 23 August 2009.

[7] Having suffered from multiple injury problems during his first two seasons at the club, he made his second first-team appearance as a starter in a 0–0 draw with FC Ingolstadt 04 on 27 November 2011, before being substituted in the 67th-minute.

[12] He received the first red card of his career on 24 February 2013 for a challenge on Ramon Machado, resulting in a three-match ban.

[15] He returned to first team action on 21 April 2013 for a 1–0 defeat to Dynamo Dresden, but was again sent off for a foul on Filip Trojan.

[17] He was sent off against SV Sandhausen in the 20th matchday,[18] before returning for the final two matches of the season, with Börner making 18 appearances in all competitions as Cottbus finished bottom of the 2.

[20] He made his debut for the club on 26 July 2014, starting in the opening match of the season as Bielefeld won 2–1 away at Mainz 05 II.

FC Heidenheim, before scoring his second and final goal of the season against Greuther Fürth on 24 April 2016.

[38][39] Despite missing out on the award, Börner was praised by manager Garry Monk, who claimed that "how he has handled that transition [to English football] has been really impressive".

[40][41] It took Börner until 24 October 2020 to make his first league appearance of the season, but he then held down a regular first team place due to injuries to the club's other centre-backs.

Bundesliga club, Hannover 96 on a free transfer, despite him still having a year of his Sheffield Wednesday contract remaining.

[51] On 2 August 2021, Börner would complete a move to German side Hannover 96 for an undisclosed fee.

[53] However, on 2 July 2024, he announced that he terminated his contract with the club, stating that he felt he wouldn't be able to support the team at the level that he would have wanted to due to ongoing ankle joint problems and did not want to occupy a spot on the squad due to this.