The Landesliga Schleswig-Holstein is the sixth tier of the German football league system and the second-highest league in the German state of Schleswig-Holstein, supplanting the Verbandsligen at that level in the state.

The Landesliga was relaunched to start play in the 2017–18 season as part of realignments in the league system of Schleswig-Holstein[1] and as a solution to the problem of many teams promoted to the Verbandsliga ending up relegated or withdrawn after one season.

[2] The league is divided into two divisions of 16 clubs each, Schleswig (north-west) and Holstein (south-east), and teams promoted to or relegated from it will be assigned to a division based on geographical proximity, a practice called "flexible game operation" (German: flexibler Spielbetrieb).

[1][3] For 2020–21 and 2021–22, the Landesliga was expanded to three groups, each having 11 to 12 teams for a total of 34–35 after the previous 2019–20 season was curtailed.

[4][5] The league was newly reformed from the following clubs that have played in the following leagues in 2016–17: