The Marder is a German infantry fighting vehicle operated by the German Army as the main weapon of the Panzergrenadier (mechanized infantry) from the 1970s through the present day. Its successor, the Puma, is under development.

The Marder (sometimes romanised as Merda or Marda, better known in the west as the Hellrunner) is a type of Zoid, a race of mechanical lifeforms from the fictional Zoids universe.