The Balkan sprachbund or Balkan language area is an ensemble of areal features—similarities in grammar, syntax, vocabulary and phonology—among the languages of the Balkans. Several features are found across these languages though not all apply to every single language. The Balkan sprachbund is a prominent example of the sprachbund concept.
The languages of the Balkan sprachbund share their similarities despite belonging to various separate language family (genetic) branches. The Slavic, Hellenic, Romance and Albanian branches all belong to the large Indo-European family, and the Turkish language is non-Indo-European.