'Lanz' was a German possible plan by the resistance group within the armed forces on the Eastern Front (February 1943).

The existence of this plan is not proved, and it is therefore only suggested rather than known that it was headed by General Hubert von Lanz and Oberst Hyazinth Graf Strachwitz von Gross-Zauche und Camminetz, together with Generalmajor Hans Speidel and Paul Loehning, and that the object was to arrest or kill Adolf Hitler early in February 1943 during the German leader’s scheduled visit to the Armeeabteilung 'Lanz', within Generalfeldmarschall Günther von Kluge’s Heeresgruppe 'Mitte', to confer with von Kluge. According to the sole source attesting to the existence of the plot, the role of Strachwitz was to use some of his armoured battalion, part of Generalleutnant Walter Hörnlein’s Division 'Grossdeutschland', to surround Hitler and his escorts shortly after the German leader’s arrival at Poltava. von Lanz would then arrest Hitler, and in the event of resistance, Strachwitz’s armour would have opened fire and killed the entire delegation.

The plan was defeated by the fact that Hitler ended his visit to the Eastern Front at Zaporozhye on 17 February, and therefore did not reach Poltava.