The 3.7 cm Flakzwilling auf Panther Fahrgestell or Flakpanzer 341 was a German self-propelled anti-aircraft gun designed by Rheinmetall during World War II.

It was intended to be armed with two 3.7 cm Flak 341 gun in a fully enclosed, rotating turret on the hull of a Panther medium tank.

The Wehrmacht had adapted a variety of wheeled and half-track vehicles to serve as mobile forward air defence positions to protect armour and infantry units in the field as well as for temporary forward area positions such as mobile headquarters and logistic points.

As Allied fighter bombers and other ground attack aircraft moved from machine gun armament and bombing to air-to-ground rockets, the air defence positions were even more vulnerable.

The answer was to create tank-based Flakpanzers with armour that would protect the gun crews while they fired upon approaching Allied aircraft.