The Mazda Atenza or Mazda 6 is a mid-size car produced by the Japanese car manufacturer Mazda since 2003. The name Atenza is used only in Japan; the Mazda 6 moniker is used everywhere else in the world.

Series 1 (1979–1980) is commonly referred to as the "SA22C" from the first alphanumerics of the vehicle identification number- although RX-7 tech site.