
The Albanian language is composed of many dialects, divided into two major groups: Gheg and Tosk. The Shkumbin river is roughly the geographical dividing line, with Gheg spoken north of the Shkumbin and Tosk south of it.

Albanian is an Indo-European language spoken by the Albanians in the Balkans and the Albanian diaspora in the Americas, Europe and Oceania. With about 7.5 million speakers, it comprises an independent branch within the Indo-European languages and is not closely related to any other Indo-European language.

The Aromanian language, also known as Macedo-Romanian or Vlach, is an Eastern Romance language, similar to Megleno-Romanian, Istro-Romanian and Romanian, spoken in Southeastern Europe. Its speakers are called Aromanians or Vlachs. Some scholars, mostly Romanian ones, consider Aromanian a dialect of Romanian.

The Bosnian language is the standardized variety of Serbo-Croatian mainly used by ethnic Bosniaks. Bosnian is one of three such varieties considered official languages of Bosnia and Herzegovina, along with Croatian and Serbian. It is also an officially recognized minority language in Croatia, Serbia, Montenegro, North Macedonia and Kosovo.
Greek is an independent branch of the Indo-European family of languages, native to Greece, Cyprus, Albania, and the other parts of the Balkans, the Black Sea coast, and the Eastern Mediterranean. It has the longest documented history of any Indo-European language, spanning at least 3,400 years of written records. Its writing system is the Greek alphabet, which has been used for approximately 2,800 years; previously, Greek was recorded in writing systems such as Linear B and the Cypriot syllabary. The alphabet arose from the Phoenician script and was in turn the basis of the Latin, Cyrillic, Armenian, Coptic, Gothic, and many other writing systems.
Macedonian is an Eastern South Slavic language. It is part of the Indo-European language family, and is one of Slavic languages, which are part of a larger Balto-Slavic branch. Spoken as a first language by around two million people, it serves as the official language of North Macedonia. Most speakers can be found in the country and its diaspora, with a smaller number of speakers throughout the transnational region of Macedonia. Macedonian is also a recognized minority language in parts of Albania, Bosnia and Herzegovina, Romania, and Serbia and it is spoken by emigrant communities predominantly in Australia, Canada and the United States.

Romani is an Indo-Aryan macrolanguage of the Romani communities. According to Ethnologue, seven varieties of Romani are divergent enough to be considered languages of their own. The largest of these are Vlax Romani, Balkan Romani (600,000), and Sinte Romani (300,000). Some Romani communities speak mixed languages based on the surrounding language with retained Romani-derived vocabulary – these are known by linguists as Para-Romani varieties, rather than dialects of the Romani language itself.