The Democratic Republic of Georgia (DRG; Georgian: საქართველოს დემოკრატიული რესპუბლიკა, romanized: sakartvelos demok'rat'iuli resp'ublik'a) was the first modern establishment of a republic of Georgia, which existed from May 1918 to March 1921. Recognized by all major European powers of the time, DRG was created in the wake of the Russian Revolution of 1917, which led to the collapse of the Russian Empire and allowed territories formerly under Russia's rule to assert independence. In contrast to Bolshevik Russia, DRG was governed by a moderate, multi-party political system led by the Georgian Social Democratic Party (Mensheviks).

Initially, DRG was a protectorate of the German Empire. However, after the German defeat in World War I, the country was partially occupied by British troops, who were sent there to counter a proposed Bolshevik invasion. The British had to leave in 1920 because of the Treaty of Moscow, in which Russia recognized Georgia's independence in exchange for DRG not hosting forces hostile to Russia's interests. Now that Western European powers were no longer present in Georgia, in February 1921 the Bolshevik Red Army proceeded to invade the country, leading to DRG's defeat and collapse by March of that year, with Georgia becoming a Soviet republic. The Georgian Government, led by Prime Minister Noe Zhordania, moved to France where it continued to work in exile. The government-in-exile was recognized by France, Britain, Belgium, and Poland as the only legitimate government of Georgia until the 1930s, when growing Soviet power and political processes in Europe made it impractical to do so indefinitely.

Although short-lived, DRG continues to be an inspiration for modern day Georgia due to its legacy of democracy and pluralism. DRG was one of the first countries in Europe to grant women the right to vote as enshrined in the Georgian constitution, which was "unusual in most European constitutions at the time". Several women of varying backgrounds were elected to the Georgian parliament, as were representatives of nine ethnicities, including Germans, Russians, Armenians, Azerbaijanis, and Jews. DRG also saw the founding of Georgia's first fully fledged university, thereby realizing a longstanding goal cherished by generations of Georgian intellectuals whose efforts were, up to that point, consistently frustrated by the Imperial Russian authorities.

After the February Revolution of 1917 and collapse of the tsarist administration in the Caucasus, most powers were held by the Special Transcaucasian Committee (Ozakom, short for Osobyi Zakavkazskii Komitet) of the Russian Provisional Government. All of the soviets in Georgia were firmly controlled by the Georgian Social Democratic Party, who followed the lead of the Petrograd Soviet and supported the Provisional Government. The Bolshevist October Revolution changed the situation drastically. The Caucasian Soviets refused to recognize Vladimir Lenin's regime. Threats from the increasingly Bolshevistic deserting soldiers of the former Caucasus army, ethnic clashes and anarchy in the region forced Georgian, Armenian and Azerbaijani politicians to create a unified regional authority known as the Transcaucasian Commissariat (14 November 1917) and later a legislature, the Sejm (23 January 1918). On 22 April 1918, the Sejm – Nikolay Chkheidze was the president – declared the Transcaucasus an independent democratic federation with an executive Transcaucasian government chaired by Evgeni Gegechkori and later by Akaki Chkhenkeli.

Many Georgians, influenced by the ideas of Ilia Chavchavadze and other intellectuals from the late 19th century, insisted on national independence. A cultural national awakening was further strengthened by the restoration of the autocephaly of the Georgian Orthodox Church (12 March 1917) and the establishment of a national university in Tbilisi (1918). In contrast, the Georgian Mensheviks regarded independence from Russia as a temporary step against the Bolshevik revolution and considered calls for Georgia's independence chauvinistic and separatist. The union of Transcaucasus was short-lived though. Undermined by increasing internal tensions and by pressure from the German and Ottoman empires, the federation collapsed on 26 May 1918, when Georgia declared independence. Two days later both Armenia and Azerbaijan declared their independence as well.

Georgia was immediately recognized by Germany and the Ottoman Empire. The young state had to place itself under German protection in the Treaty of Poti and to cede its largely Muslim-inhabited regions (including the cities of Batumi, Ardahan, Artvin, Akhaltsikhe and Akhalkalaki) to the Ottoman government in the 4 June Treaty of Batum. However, German support enabled the Georgians to repel the Bolshevik threat from Abkhazia. German forces were almost certainly under the command of Friedrich Freiherr Kress von Kressenstein. Following the German defeat in the First World War, British occupation forces arrived in the country, with the permission of the Georgian government. Relations between the British and the local population were more strained than they had been with the Germans. British-held Batumi remained out of Georgia's control until 1920. In December 1918, a British force was deployed in Tbilisi too.

Georgia's relations with its neighbors were uneasy. Territorial disputes with Armenia, Denikin's White Russian government and Azerbaijan led to armed conflicts in the first two cases. A British military mission attempted to mediate these conflicts in order to consolidate all anti-Bolshevik forces in the region. To prevent White Russian army forces from crossing into the newly established states, the British commander in the region drew a line across the Caucasus that Denikin would not be permitted to cross, giving both Georgia and Azerbaijan temporary relief. The threat of invasion by Denikin's forces, notwithstanding the British position, brought Georgia and Azerbaijan together in a mutual defense alliance on 16 June 1919.

On 14 February 1919, Georgia held parliamentary elections won by the Social Democratic Party of Georgia with 81.5% of the vote. On 21 March, Noe Zhordania formed the third government, which had to deal with armed peasants' revolts incited by local Bolshevik activists and largely supported by Russia. These became more troublesome when carried out by ethnic minorities such as Abkhazians and Ossetians.