The Mari language is a Uralic language spoken in parts of Russia.

Mari language may also mean:

Mari language (Madang Province), an Austronesian language of Papua New Guinea Mari language (Sepik), a Papuan language of Papua New Guinea Mari, or Namo, one of the Nambu languages of Papua New Guinea One of the Maric languages of Australia

See also , for the languages spoken in the ancient Near Eastern city of Mari