MZ Motorrad-und Zweiradwerk GmbH was a motorcycle manufacturer located in Zschopau, Germany. MZ an acronym, stands for Motorradwerk Zschopau (German for motorcycle factory at Zschopau) in the Erzgebirge region of Saxony. From 1992 to 1999 the company was called MuZ an acronym for Motorrad und Zweiradwerk (German for motorcycle and two-wheeler factory), latterly MZ stands for MZ Motorrad- und Zweiradwerk GmbH.

Source: Wikipedia