| Player | Matches | Goals | Penalties | First match | Last match |
|---|---|---|---|---|---|
| Kopplin, Björn | 10 | 1 | 0 | 2004-10-01 | 2005-05-19 |
| Korb, Julian | 4 | 0 | 0 | 2007-09-22 | 2008-05-27 |
| Korczowski, Noah | 7 | 1 | 0 | 2009-08-14 | 2010-06-02 |
| Korzynietz, Jaden | 2 | 0 | 0 | 2020-10-09 | 2020-10-12 |
| Kosanic, Nikola | 9 | 1 | 0 | 2014-09-12 | 2015-02-16 |
| Koscierski, Kacper | 1 | 0 | 0 | 2022-09-26 | 2022-09-26 |
| Kösecik, Sahin | 1 | 0 | 0 | 2014-06-04 | 2014-06-04 |
| Kösters, Matthias | 2 | 0 | 0 | 2023-09-11 | 2024-03-25 |
| Kostka, Michael | 2 | 0 | 0 | 2019-02-09 | 2019-02-11 |
| Kracun, Christopher | 3 | 0 | 0 | 2008-11-24 | 2009-04-09 |
| Kraft, Thomas | 1 | 0 | 0 | 2004-05-26 | 2004-05-26 |
| Krahn, Elijah | 3 | 0 | 0 | 2019-03-23 | 2019-05-28 |
| Kramer, Emil | 7 | 0 | 0 | 2023-10-13 | 2024-02-14 |
| Kranitz, Simon | 5 | 1 | 0 | 2011-09-16 | 2012-05-30 |
| Krapf, Leon | 6 | 0 | 0 | 2013-09-13 | 2014-03-25 |
| Krasniqi, Atmir | 4 | 0 | 0 | 2017-10-03 | 2017-11-11 |
| Krasniqi, Leonard | 2 | 0 | 0 | 2021-09-02 | 2021-09-05 |
| Krasse, Tino | 3 | 0 | 0 | 2003-10-16 | 2004-04-10 |
| Krauß, Tom | 7 | 1 | 0 | 2016-09-11 | 2017-05-30 |
| Kreuzer, Niklas | 9 | 0 | 0 | 2008-10-16 | 2009-05-20 |
| Krol, Dennis | 6 | 0 | 0 | 2007-02-16 | 2007-04-09 |
| Kroll, Xaver | 2 | 0 | 0 | 2018-09-05 | 2018-09-09 |
| Kroos, Felix | 8 | 6 | 0 | 2006-09-22 | 2007-05-30 |
| Krüger, Florian | 5 | 3 | 0 | 2014-09-12 | 2015-03-18 |
| Kruse, Paul | 1 | 0 | 0 | 2013-09-16 | 2013-09-16 |
| Kruska, Marc-André | 10 | 1 | 0 | 2002-08-26 | 2003-04-10 |
| Kübler, Jannis | 8 | 0 | 0 | 2014-09-12 | 2015-05-20 |
| Kuffour, Lloyd-Addo | 2 | 0 | 0 | 2017-09-11 | 2017-09-13 |
| Kühn, Bastian | 2 | 0 | 0 | 2007-11-23 | 2007-11-25 |
| Kühn, Nicolas | 5 | 2 | 0 | 2015-10-22 | 2016-02-08 |
| Kümmritz, Liam Bennett | 1 | 0 | 0 | 2019-09-08 | 2019-09-08 |
| Kunstmann, Kelvin | 4 | 0 | 0 | 2022-09-23 | 2023-01-13 |
| Kurt, Elias | 5 | 0 | 0 | 2018-10-10 | 2019-03-25 |
| Kurt, Kaan | 5 | 0 | 0 | 2016-09-11 | 2017-02-13 |
| Kurt, Sinan | 5 | 1 | 0 | 2011-09-16 | 2012-05-30 |
| Kustermann, Kilian | 3 | 2 | 0 | 2013-05-12 | 2013-05-15 |
| Kyeremateng, Gabriel | 7 | 2 | 0 | 2014-09-12 | 2015-02-16 |
| Kyeremeh, Michael | 1 | 0 | 0 | 2013-09-13 | 2013-09-13 |
| Labus, Robert | 4 | 0 | 0 | 2007-09-22 | 2008-05-29 |
| Lade, Benjamin | 1 | 0 | 0 | 2021-11-13 | 2021-11-13 |
| Laghrissi, Eymen | 9 | 3 | 0 | 2023-09-08 | 2024-03-25 |
| Landers, Jörg | 2 | 0 | 0 | 2001-08-21 | 2001-08-23 |
| Landwehr, Jannik | 3 | 0 | 0 | 2011-10-13 | 2012-05-30 |
| Lanfer, Erik | 1 | 0 | 0 | 2019-10-09 | 2019-10-09 |
| Lang, Jannis | 4 | 0 | 0 | 2017-09-13 | 2018-03-26 |
| Lässig, Valentin | 2 | 0 | 0 | 2019-03-23 | 2019-03-25 |
| Latza, Danny | 6 | 0 | 0 | 2004-10-01 | 2005-05-19 |
| Laupheimer, Lukas | 2 | 0 | 0 | 2018-09-05 | 2018-09-09 |
| Lehner, Marius | 3 | 0 | 0 | 2012-09-14 | 2013-05-13 |
| Lelle, David | 2 | 1 | 0 | 2018-11-09 | 2018-11-11 |