Nils Langer (German pronunciation: [ˈniːls ˈlaŋɐ]; born 25 January 1990, in Ludwigsburg) is a German retired tennis player. Langer reached a career high ATP singles ranking of world No. 188, achieved in March 2016. Langer made his ATP main draw debut at the 2009 International German Open in the doubles event where he partnered Kevin Krawietz, but lost in the first round to Marcelo Melo and Filip Polášek, 0–6, 4–6.