Hiuchi () is a Japanese word that may refer to:
Hiuchigatake, a stratovolcano in Fukushima Prefecture, Japan. Mount Hiuchi, a mountain in Niigata Prefecture, Japan. JS Hiuchi, a Hiuchi class Auxiliary Multi-purpose Support (AMS) ship of the Japan Maritime Self-Defense Force (JMSDF). Hiuchi-class support ship, designed to provide Auxiliary Multi-purpose Support (AMS) for the Japanese Maritime Self-Defense Force (JMSDF).