Jens Wemmer (born 31 October 1985) is a German footballer who plays for Hibernians FC in the Maltese Premier League, as a right back. Wemmer played for seven consecutive years for SC Paderborn 07. He is the brother of Jörn Wemmer.
Panathinaikos are closing in on the transfer of Jens Wemmer, who has been released from Paderborn. On 29 May 2015, Jens Wemmer sign his three-year deal with Giannis Anastasiou's team Panathinaikos for an undisclosed fee. "I'm very happy that I signed for such a great club and all I want is to win many titles in Greece and take part with the team in the European competitions. I'm ready for the big challenge and I hope that our fans will support us” , were 29-year-old's words and added for his former club "There were seven years in Paderborn, I grew up with the SC from the 3. Liga to in Bundesliga. More is not possible. Now I need a different challenge." On 28 July Wemmer makes his debut with Panathinaikos against Club Brugge on the UEFA Champions League.
Since January 2016, he is not in the plans of Andrea Stramaccioni, coach of Panathinaikos. On 18 July 2017, as he is not in the plans of Panathinaikos new coach Marinos Ouzounidis, Wemmer was not content with the appeal he filed to the Economic Dispute Settlement Committee but decided to chase the case even further as he left Athens and returned to Germany, indicating that he did not have the will to settle for €550,000 of his contract. At the same time, his manager also appealed to the Committee, demanding that he be paid €15,000 for his commission. On 28 September 2017, the committee of the Greek Football Federation's financial disputes has given the football player the amount of €498,000 plus the legal interest.
On 19 March 2018, Hellenic Football Federation announced the deduction of three points from Panathinaikos for the delay in repayment of Wemmer, a penalty that will be triggered in a new court, as in the ruling it was clarified that "the immediate application of the decision is rejected". The 32-year-old German footballer spoke for his dispute with the club, claiming that he respects Panathinaikos, but he does not trust the administration in the club who are "indifferent". Eventually on 20 April 2018, Panathinaikos faced a three points deduction, as the debt to Jens Wemmer has not be settled within the specified period. The administration of the club was unable to reach an agreement with the ex- player and the points' deduction has been confirmed.
Hibernians announced on 29 June 2019, that they had signed Wemmer on a 1-year contract.