H30

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

See also Hydronium (H3O+), with a letter O instead of a zero