Since the Hittite empire, at least the old empire, covered most of Anatolia, it would be referred to as the territory of the city/state of the Hitties.

In the Laws, which is an early work that is what they say: udnī Hatti (Though they wrote KUR URU Ha-at-ti, where the first two words were Sumerograms, Sumerian cuneiform characters used as ideograms: KUR was a Sumerogram for lands that would be read as the Hittite word udnī, while URU is a Sumerogram for city which would not be read, it would just indicate how Hatti was being used, i.e. as the place. The next three characters were used as syllabograms spelling out the word.)