Lütjenburg (Low German: Lüttenborg) is a town of the district of Plön, Schleswig-Holstein, Germany.

Lütjenburg was founded in the 12th century by Lord Holstein as a result of the conquest of the old territories of the Slavic peoples.

Since the local election in 2021, the CDU has ten and the SPD nine seats in the 19-seats city council of Lütjenburg.

The member of the Bundestag for the electoral district of Plön-Neumünster is Kristian Klinck (SPD).

A special school (for intellectually challenged students), "Otto-Mensing-Schule" is also located in Lütjenburg.