* Serbia: Serbian is the official language and is spoken by the majority of the population.
* Bosnia and Herzegovina: Serbian is one of the three official languages, alongside Bosnian and Croatian. It is spoken by a significant portion of the population, particularly in the Republika Srpska entity.
* Montenegro: Serbian is one of the two official languages, alongside Montenegrin. It is spoken by a large portion of the population.
* Croatia: While not official, Serbian is spoken by a minority population, particularly in the eastern parts of the country bordering Serbia.
* Kosovo: Serbian is spoken by a significant minority population, primarily in the north of the country.
Additionally, Serbian is spoken by diaspora communities around the world, particularly in countries like:
* United States
* Canada
* Australia
* Germany
* Austria
It is important to note that the linguistic situation in the Balkans is complex, with Serbian, Bosnian, Croatian, and Montenegrin often being considered part of a single language continuum. These languages are mutually intelligible to a large extent, and the distinction between them can be politically sensitive.