Romanian (obsolete spellings: Rumanian or Roumanian; autonym: limba română ˈlimba roˈmɨnə, or românește, in Romanian) is the official and main language of Romania and Moldova. As a minority language it is spoken by stable communities in the countries surrounding Romania (Bulgaria, Hungary, Serbia and Ukraine), and by the large Romanian diaspora. In total, it is spoken by 28–29 million people as an L1+L2 language, of whom 24 million are native speakers. In Europe, Romanian occupies the 10th position among 37 official languages.
Romanian is part of the Eastern Romance sub-branch of Romance languages, a linguistic group that evolved from several dialects of Vulgar Latin which separated from the Western Romance languages in the course of the period from the 5th to the 8th centuries. To distinguish it within the Eastern Romance languages, in comparative linguistics it is called Daco-Romanian as opposed to its closest relatives, Aromanian, Megleno-Romanian, and Istro-Romanian. Romanian was also known as Moldovan in Moldova, although the Constitutional Court of Moldova ruled in 2013 that "the official language of Moldova is Romanian". On 16 March 2023, the Moldovan Parliament approved a law on referring to the national language as Romanian in all legislative texts and the constitution. On 22 March, the president of Moldova, Maia Sandu, promulgated the law.
The history of the Romanian language started in the Roman provinces north of the Jireček Line in Classical antiquity but there are 3 main hypothesis around its exact territory: the autochthony thesis (it developed in left-Danube Dacia only), the discontinuation thesis (it developed in right-Danube provinces only), and the “as-well-as” thesis that supports the language development on both sides of the Danube. Between the 6th and 8th century, following the accumulated tendencies inherited from the vernacular spoken in this large area and, to a much smaller degree, the influences from native dialects, and in the context of a lessened power of the Roman central authority the language evolved into Common Romanian.