MZ 1000S is a 998 cc 180-degree parallel twin motorcycle produced between 2004 and 2007 released in the USA in 2005 by the now defunct German company MZ Motorrad. Once the flagship of the range, the 1000S was MZ's largest-ever displacement motorcycle, and their first multi-cylinder bike since 1959. The MZ 1000S was the most powerful production inline twin cylinder engine worldwide.

Motorenwerke Zschopau GmbH is a German motorcycle manufacturer located in Zschopau, Saxony. The acronym MZ since 1956 stands for Motorenwerke Zschopau GmbH. From 1992 to 1999 the company was called MuZ, an acronym for Motorrad und Zweiradwerk.