Kilian Ludewig (born 5 March 2000) is a German professional footballer who plays as a right-back for Liga I club Petrolul Ploiești.

Ludewig started playing football at Barsbütteler SV and Willinghusener SC before moving to the youth academy of FC St. Pauli in 2014.

In November 2015, he made his debut for Leipzig's under-19 team in the Under 19 Bundesliga when he came off the bench for Przemysław Płacheta on the tenth matchday of the 2015–16 season against Hamburger SV in injury time.

[10] Ludewig joined Austrian Football Bundesliga club Red Bull Salzburg in June 2018, signing a four-year contract.

[17] After having only appeared for FC Liefering through one and a half seasons, Ludewig joined English club Barnsley on loan on 9 January 2020.

In Gelsenkirchen Ludewig only made six league appearances as he had missed a large part of the season due to a metatarsal fracture suffered in December 2020.