Hispano-Celtic is a term for all forms of Celtic spoken in the Iberian Peninsula before the arrival of the Romans (c. 218 BC, during the Second Punic War). In particular, it includes:
- A northeastern inland language attested at a relatively late date in the extensive corpus of Celtiberian. This variety, which Jordán Cólera proposed to name Northeastern Hispano-Celtic, has long been synonymous with the term Hispano-Celtic and is universally accepted as Celtic.
- A language in the northwest corner of the peninsula, with a northern and western boundary marked by the Atlantic Ocean, a southern boundary along the river Douro, and an eastern boundary marked by Oviedo, which Jordán Cólera has proposed to call Northwestern Hispano-Celtic, where there is a corpus of Latin inscriptions containing isolated words and sentences that are clearly Celtic.
