Zierer Karussell- und Spezialmaschinenbau GmbH & Co. KG (Short name: Zierer) is a German company located close to Deggendorf. Zierer manufactures Tivoli and Force line of roller coasters, as well as panoramic wheels, wave swingers, flying carpets, Hexentanz and Kontiki rides. The company also has partnered with Schwarzkopf to build Lisebergbanan at Liseberg and Knightmare at Camelot Theme Park.

The name of the company, translated from German, is Zierer Carousel and Special Machine Construction. "Special machine construction" refers to amusement rides such as roller coasters or wave swingers.

Zierer was founded in 1930, and is a subsidiary of Max Streicher GmbH & Co. KG aA.

As of 2017, Zierer has built 173 roller coasters around the world.