The Versuchsträger 1–2 (abbreviated: VT, meaning 'test-beds' or 'experiment carrier') were two German prototype twin gun turretless main battle tanks.

Since the early 1970s a number of West German companies have been working on conceptual designs for a successor to the Leopard 1.

The test programme ended proving that a twin-gunned turretless tank could be created with enough technical effort, but had drawbacks in both practical and tactical use.

For further testing of the mobility and the concept of a tank with two main guns, five Gefechtsfeldversuchträger (GVT, 'battlefield test-beds') were designed and built in 1975 and 1976.

All VT tanks followed in some extent the traditional design of German Jagdpanzers, like the post-war Kanonenjagdpanzer.