'Lenz-Nord' was a German operation in the Belorussia region of the German-occupied western USSR against so-called partisans (largely Jews and other 'undesirables') (9/12 April 1943).

Undertaken by a combined force of Sicherheitsdienst personnel, police and SS troops of the Kampfgruppe 'von Gottberg' under the command of SS-Brigadeführer und Generalmajor der Waffen-SS Curt von Gottberg, the operation targeted the area of Borisov, Smolevichi, Logoisk and Sembin.