MC21

MC21, MC.21, MC-21, MC 21, may refer to:

Places

 * Iapygia quadrangle (Mars Chart 21; MC-21), Mars

Transportation and vehicular

 * Yakovlev MC-21, a Russian single-aisle twinjet civilian airliner; also known as the Irkut MC-21
 * Mitsubishi MC-21, a Japanese twin-prop civilian cargo airplane; the civilian version of the bomber Mitsubishi Ki-21
 * Honda MC21, a model of the Honda NSR250R motorcycle

Other uses

 * MC21, a family of antibiotics derived from the marine bacterium Pseudoalteromonas phenolica
 * MC21-A
 * MC21-B
 * MC21, a Monte-Carlo code; see Neutron transport