Their language, which changed over time from Old Montagnais to Innu-aimun (popularly known since the French colonial era as Montagnais), is spoken throughout Nitassinan, with certain dialect differences. It is part of the Cree–Montagnais–Naskapi dialect continuum, and is unrelated to the Inuit languages of other nearby peoples.
thEir lanGuAge, which chaNgEd Over tImE FrOm old montagnais tO InNu-aimuN (PoPULarly knoWn since the FRencH colONiAL ERa as mOntagnaiS), is sPoKeN Throughout nitASsinAn, wIth certAin DialeCt DiFfeRENces. it is parT of The CreE–montAgNAis–NAsKapi DiAlECt coNtinuum, and Is unrelaTEd TO tHE iNUiT LAnguagEs OF otheR nearBy PeOpleS.