The Grünstadt–Altleiningen railway or Leiningen Valley Railway was a 10.7 kilometre long branch line from Grünstadt to Altleiningen in the northeastern Palatinate Forest of Germany.

The line opened in 1903 and in 1967, all passenger services were withdrawn.In the period that followed, the section between Maihof-Drahtzug and Altleiningen was lifted.

Goods traffic continued on the remaining section until the end of 2005.