South Ossetia, officially the Republic of South Ossetia or the State of Alania, is a partially recognised landlocked state in the South Caucasus. It has an officially stated population of just over 56,500 people (2022), who live in an area of 3,900 square kilometres (1,500 sq mi), with 33,000 living in the capital city, Tskhinvali.

As of 2024, only five members of the United Nations (UN) recognise South Ossetia as a sovereign state – Russia, Venezuela, Nicaragua, Nauru, and Syria.The Georgian government and all other UN member states regard South Ossetia as sovereign territory of Georgia occupied by Russia.

The political status of South Ossetia is a central issue of the Georgian–Ossetian conflict and Georgia–Russia relations. The Georgian constitution designates the area as "the former autonomous district of South Ossetia", in reference to the South Ossetian Autonomous Oblast disbanded in 1990.The Georgian government informally refers to the area as the Tskhinvali region and considers it a part of Georgia's Shida Kartli region. Lacking effective control over the territory, Georgia maintains an administrative body called Provisional Administration of South Ossetia.

The South Ossetian Autonomous Oblast, established by Soviet authorities in Moscow in 1922, declared independence from the Georgian Soviet Socialist Republic in September 1990. Towards the end of 1990, the situation for ethnic Georgians in the region worsened sharply. There were reports of multiple cases of lootings and beatings committed both by Georgian and Ossetian forces and paramilitaries. The Georgian government responded by abolishing South Ossetia's autonomy and dispatching its troops to the region. The escalating crisis led to the 1991–1992 South Ossetia War with Russian involvement on Ossetian side. After the war, the conflict remained frozen throughout 1990s and saw two major escalations in 2000s: in 2004 and in 2008The latter conflict led to the full-scale Russo-Georgian War of August 2008.