Generally, this means players that have played a significant amount of first-class matches for the club.
Other players who have played an important role for the club can be included, but the reason why they have been included should be added in the 'Notes' column.
FC Kaiserslautern players, major or minor, with a Wikipedia article, see Category:1.
FC Kaiserslautern players, and for the current squad see the main 1.
Players are listed according to the date of their first team debut.