The Lübeck–Bad Kleinen railway is a single-track, non-electrified main line between the German states of Schleswig-Holstein and Mecklenburg-Vorpommern.

From there it would run via Strasburg over the modern Polish border to Szczecin (then called Stettin).

The newly established Lübeck-Kleinen Railway Company was commissioned in 1865 to construct the line.

However, there was a delay in construction, as the route was changed several times by the company, and it was ultimately not financially able to complete the line.

The concentration of all the lines through the central station allowed through trains to run from Hamburg via Lübeck, Bad Kleinen and Neubrandenburg to Stettin.

After 1945, through-traffic on the line ended because the border between the British and the Soviet occupation zone was just east of Lübeck.

In the early years, trains continued to Sassnitz, connecting to the ferry to Sweden.

For a few years a corridor express (D-Zug) train ran from Cologne to Rostock (only in this direction), stopping in Grevesmühlen.

The importance of the line since the mid-1990s, when two long-distance services (Stralsund–Rostock–Hamburg and Berlin/Leipzig–Lübeck–Kiel) operated every two hours, has decreased markedly.

First, the trains between Rostock and Hamburg now run on the route via Schwerin and Büchen and, on the other hand, the Lübeck–Leipzig InterRegio line was abandoned in 2001.