K8 or K-8 can mean: · K8, a member of the Mazda K engine family · K-8, a type of school that included kindergarten and grades 1 through 8. · AMD K8, the internal designation for the first generation of AMD64-architecture microprocessors from AMD · Schleicher Ka 8, a single-seat glider · Form 8-K used by the U.S. Securities and Exchange Commission · Hongdu JL-8, a training aircraft · Kaliningrad K-8 (AA-3 Anab) Soviet missile · Soviet submarine K-8 · K-8 , two highways in Kansas, one in northern Kansas, one in southern Kansas · Zambia Skyways IATA airline designator · A shorthand version of the feminine name Kate K8