The word Hattian may refer to:
- An ancient people of Anatolia, the Hattians. The Hattians were an ancient people who inhabited the land of Hatti in present-day central and southeastern parts of Anatolia, Turkey.
- An extinct language spoken in that region, the Hattic language. Hattic was a language spoken by the Hattians in Asia Minor between the 3rd and the 2nd millennia BC