The Schwerer Wehrmachtschlepper (sWS; "Heavy Military Tractor") was a German World War II half-track vehicle used in various roles between 1943 and 1945.

Armored versions mounted anti-aircraft guns or a 10 barrel rocket launcher (Nebelwerfer).

On 7 May 1942 Hitler ordered development of a simple, low-speed, half-track, load-carrying vehicle for use on the Eastern Front.

10, the sWS's suspension system consisted of five double roadwheels per side, overlapping and interleaved in the Schachtellaufwerk [de] layout, mounted on swing arms sprung by torsion bars.

The sides of the cargo compartment folded down to give the crew more room to serve the weapons.