Scherenburg Castle (German: Burgruine Scherenburg or Schloss Scherenberg) is a ruined hill castle (hillside castle) at an elevation of 200 m above sea level (NN) which stands on a hillside above the town of Gemünden am Main in the province of Lower Franconia in the German state of Bavaria.

The castle was probably built before 1243 by the Counts of Rieneck, to whom the land belonged, as a toll castle to ensure collection of tolls at the river crossing of the River Main and the borders with the state of Würzburg.

As a result, there were conflicts with the Bishop of Würzburg, Hermann I of Lobdeburg [de], who built Slorburg Castle in the immediate vicinity in order to demonstrate his power.

In 1469, the castle finally went to Würzburg and was given the name of its Prince-Elector, Rudolph II of Scherenberg.

In the second half of the 18th century the castle began to fall into ruins.