H22

H22 may refer to:
 * H22 engine, an automobile engine from Honda
 * British NVC community H22, a type of heath community in the British National Vegetation Classification
 * Highway H22 (Ukraine)
 * HMS Diamond (H22), a Royal Navy D-class destroyer
 * HMS H22, a Royal Navy H-class submarine
 * Horikawa H-22, a Japanese trainer glider