H30

H30 or H-30 may refer to:
 * H30 (Long Island bus), in Suffolk County, New York
 * Dongfeng Fengshen H30, a Chinese hatchback
 * HMS Beagle (H30), a Royal Navy B-class destroyer
 * HMS H30, a Royal Navy H class submarine
 * McCulloch H-30, an American tandem-rotor helicopter
 * Nissan H30, an automobile engine