K8

K8 or K-8 may refer to:


 * K-8 (Kansas highway), two highways in Kansas, one in northern Kansas, one in southern Kansas
 * K-8 school, a type of school that includes kindergarten and grades one through eight
 * K8 telephone box, designed by Bruce Martin
 * AMD K8, the internal designation for the first generation of AMD64-architecture microprocessors from AMD
 * Hongdu JL-8 or K-8, a training aircraft
 * Kaliningrad K-8 (AA-3 Anab), a Soviet missile
 * Norrlands dragonregemente or K 8, a Swedish Army cavalry regiment
 * Schleicher Ka 8, a single-seat glider
 * Soviet submarine K-8
 * Violin Sonata No. 3 (Mozart) K. 8, by Wolfgang Amadeus Mozart
 * Zambia Skyways, IATA airline designator
 * World Atlantic Airlines, IATA airline designator
 * Kan Air, IATA airline designator
 * K8, a member of the Mazda K engine family
 * LG K8, an LG K series mobile phone released in 2016
 * K8 group, an online casino company
 * Kubernetes, a software container orchestration system
 * Kia K8, a South Korean car
 * K8, the on-air branding of KAIT, a television station in Jonesboro, Arkansas