Moldovan or Moldavian (Latin alphabet: limba moldovenească, Moldovan Cyrillic alphabet: лимба молдовеняскэ) is one of the two local names for the Romanian language in Moldova. Moldovan was declared the official language of Moldova in Article 13 of the constitution adopted in 1994, while the 1991 Declaration of Independence of Moldova used the name Romanian. In 2003, the Moldovan parliament adopted a law defining Moldovan and Romanian as glottonyms for the same language. In 2013, the Constitutional Court of Moldova interpreted that Article 13 of the constitution is superseded by the Declaration of Independence, thus giving official status to the name Romanian.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 breakaway region of Transnistria continues to recognize "Moldavian" as one of its official languages, alongside Russian and Ukrainian. Ukraine also continues to make a distinction between Moldovan and Romanian, with one village declaring its language to be Romanian and another declaring it to be Moldovan, though Ukrainian officials have announced an intention to remove the legal status of "Moldovan". On 16 November 2023, the Ministry of Education and Science of the Ukrainian government stated that it has initiated steps to abolish the Moldovan language and to replace it with Romanian. On 13 January 2024, Ukrainian newspaper Dumska reported that the Ukrainian Ministry of Education and Science had announced all 16 schools in Odesa Oblast teaching "Moldovan" had dropped the term in favor of Romanian.

The language of the Moldovans had for centuries been interchangeably identified by both terms, but during the time of the Soviet Union, Moldovan, or as it was called at the time, Moldavian, was the only term officially recognized. Its resolution declared Moldavian a Romance language distinct from Romanian.

While a majority of Moldovans with higher education, as well as a majority of inhabitants of the capital city of Chișinău, call their language Romanian, most rural residents indicated Moldovan as their native language in the 2004 census. In schools in Moldova, the term "Romanian language" has been used since independence.

The variety of Romanian spoken in Moldova is the Moldavian subdialect, which is spread approximately within the territory of the former Principality of Moldavia (now split between Romania, Moldova and Ukraine). Moldavian is considered one of the five major spoken varieties of Romanian. However, all five are written identically, and Moldova and Romania share the same literary language.

The standard alphabet used in Moldova is equivalent to the Romanian alphabet, which uses the Latin script. Until 1918, varieties of the Romanian Cyrillic alphabet were used. The Moldovan Cyrillic alphabet (derived from the Russian alphabet and standardised in the Soviet Union) was used in 1924–1932 and 1938–1989 and remains in use in Transnistria.

The history of the Moldovan language refers to the historical evolution of the glottonym Moldavian/Moldovan in Moldova and beyond. It is closely tied to the region's political status, as during long periods of rule by Russia and the Soviet Union, officials emphasized the language's name as part of separating the Moldovans from those people who began to identify as Romanian in a different nation-building process. Cyrillic script was in use. From a linguistic perspective, Moldovan is an alternative name for the varieties of the Romanian language spoken in the Republic of Moldova (see History of the Romanian language).

Before 1918, during the period between the wars, and after the union of Bessarabia with Romania, scholars did not have consensus that Moldovans and the Romanians formed a single ethnic group. The Moldovan peasants had grown up in a different political entity and missed the years of creating a pan-Romanian national political consciousness. They identified as Moldovans speaking the language "Moldovan". This caused reactions from pan-Romanian nationalists. The concept of the distinction of Moldovan from Romanian was explicitly stated only in the early 20th century. It accompanied the raising of national awareness among Moldovans, with the Soviets emphasizing distinctions between Moldavians and Romanians. Moldavian has also been recorded by the 1960s' Romanian Linguistic Atlas as the answer to the question "What [language] do you speak?" in parts of Western Moldavia (Galați and Iași counties).