AC Schnitzer Automobile Technik is a third party tuning company based in Aachen, Germany specializing in BMW and MINI cars, as well as BMW motorcycles.

Founded in 1987, it was named after Aachen's licence plate code AC and the Schnitzer/Lamm family that also runs the successful Schnitzer Motorsport team in Bavaria. The Company is now part of the KOHL Automobile GmbH Group, but remains associated with Schnitzer.

AC Schnitzer has its headquarters in Aachen (which is what the AC in its name stands for). It is one of the largest, most renowned vehicle customizers worldwide for the BMW brand. Although the firm has common roots with Schnitzer Motorsport, the famous racing team, it is a completely independent concern both commercially and legally. AC Schnitzer is part of the Kohl Group, which also counts Steinmetz as one of its associates.