The Wilgartaburg, also called the Wiligartaburg, Wilgartsburg or Wiligartisburg, is the heritage site of a ruined rock castle located at a height of 245 m above sea level (NN) near the German village of Wilgartswiesen in the state of Rhineland-Palatinate.

The Wilgartaburg is one of the oldest castles in the Palatinate region, probably dating to the 8th or 9th century.

According to an unverified source it was built in the late 10th or early 11th century by an abbot of Hornbach Abbey, initially as a wooden castle.

On 16 April 828, her granddaughter, also called Wiligarta and the daughter of Wernher II, donated her estate, Wiligartawisa, with all the fields, pastureland and woods within which the castle stood, to Hornbach Abbey.

All that survives of the castle are a few wall remains, numerous putlog holes and rock chambers.