Costruzione Italiana Macchine Attrezzi (CIMA, "Italian Machine Tool Company") is an Italian gear, powertrain, and transmission manufacturer based in Bologna.

CIMA was founded in 1942 as a manufacturer of gear machining equipment before producing its own gears in 1946. Beginning in the 1950s CIMA supplied gears for automobile and motorcycle racing applications,^[1] including Scuderia Ferrari,^{[lower-alpha 1]} Porsche, Harley-Davidson,^[3] Minarelli, and Honda.^[4] In 1980 what is now the Coesia Group [it] purchased CIMA, who went on to expand the into more machinery markets as well as marine applications.^[5] In the 90s, CIMA expanded its reach to the aeronautical industry and found more success in racing.^[6] After advancing their low pressure vacuum carburizing and gas quenching methods in 2002, CIMA developed even higher performance transmissions for road and race applications. Their transaxles^{[lower-alpha 2]} are found in many low volume supercars.^{[lower-alpha 3][13][2][8]}