The country's name derives from Venetian and translates to "Black Mountain", deriving from the appearance of Mount Lovćen when covered in dense evergreen forests.
The native name Crna Gora came to denote the majority of contemporary Montenegro only in the 15th century. Originally, it had referred to only a small strip of land under the rule of the Paštrovići, but the name eventually came to be used for the wider mountainous region after the Crnojević noble family took power in Upper Zeta. The aforementioned region became known as Stara Crna Gora 'Old Montenegro' by the 19th century to distinguish the independent region from the neighbouring Ottoman-occupied Montenegrin territory of Brda '(The) Highlands'. Montenegro further increased its size several times by the 20th century, as the result of wars against the Ottoman Empire, which saw the annexation of Old Herzegovina and parts of Metohija and southern Raška. Its borders have changed little since then, losing Metohija and gaining the Bay of Kotor.
After the second session of the AVNOJ during World War II in Yugoslavia, the modern state of Montenegro was founded as the Federal State of Montenegro (Montenegrin: Савезна држава Црне Горе / Savezna država Crne Gore) on 15 November 1943 within the Democratic Federal Yugoslavia by the ZAVNOCGB. After DF Yugoslavia became the Federal People's Republic of Yugoslavia, the Federal State of Montenegro was renamed to the People's Republic of Montenegro (Montenegrin: Народна Република Црна Гора / Narodna Republika Crna Gora) on 29 November 1945. In 1963, the FPRY was renamed to the Socialist Federal Republic of Yugoslavia and coincidentally, the People's Republic of Montenegro was renamed to the Socialist Republic of Montenegro (Montenegrin: Социјалистичка Република Црна Гора / Socijalistička Republika Crna Gora). As the breakup of Yugoslavia occurred, the SRCG was renamed to the Republic of Montenegro (Montenegrin: Република Црна Гора / Republika Crna Gora) on 27 April 1992 within the Federal Republic of Yugoslavia by removing the adjective "socialist" from the republic's title. Since 22 October 2007, a year after its independence, the name of the country became simply known as Montenegro.
The ISO Alpha-2 code for Montenegro is ME and the Alpha-3 Code is MNE.