The Aequi () were an Italic tribe on a stretch of the Apennine Mountains to the east Latium in central of Italy who appear in the early history of ancient Rome. After a long struggle for independence from Rome, they were defeated and substantial Roman colonies were placed on their soil. Only two inscriptions believed to be in the Aequian language remain. No more can be deduced than that the language was Italic. Otherwise, the inscriptions from the region are those of the Latin-speaking colonists in Latin. The colonial exonym documented in these inscriptions is Aequi and also Aequicoli (colonists of Aequium). The manuscript variants of the classical authors present Equic-, Aequic-, Aequac-. If the form without the -coli is taken as an original, it may well also be the endonym, but to date further evidence is lacking.