During World War I a number of countries were conquered and controlled. Some of these countries were subsequently given new names and new government leaders loyal to the conquering country. These countries are known as puppet states. Germany and the Ottoman Empire were the two countries with puppet states. The Allies had many more puppet states than all the Central Powers collectively: the United Kingdom had the largest empire in the world.

In addition, several countries captured land in the years leading up to the war, which then became puppet states; those states which are immediately relevant to the war are also included here.

Central Powers

German Empire

The German Empire had a number of puppet states during World War I. All the states were previously under Russian control and had long been of interest to the regime.

Created	Disestablished	Puppet State	Flag	Country/territory	Notes
6 December, 1917	17 July, 1919	Kingdom of Finland Finnish: Suomen kuningaskunta German: Königreich Finnland		Finland
November 5, 1916	November 11, 1918	Kingdom of Poland Polish: Królestwo Polskie German: Königreich Polen		Poland	The Central Powers' forces occupied Russian Congress Poland in 1915 and in 1916 the German Empire and Austria-Hungary created a Polish Monarchy in order to exploit the occupied territories in an easier way and mobilize the Poles against the Russians (see Polish Legions). In 1918 the state became independent and formed the backbone of the new internationally recognized Second Polish Republic.
February 16, 1918	November 9, 1918	Kingdom of Lithuania Lithuanian: Lietuvos Karalystė German: Königreich Litauen		Lithuania	After Russia's defeat and the territorial cessions of the Treaty of Brest-Litovsk, the Germans established a Lithuanian kingdom. However it became an independent republic with Germany's defeat.
March 8, 1918	November 18, 1918	Duchy of Courland and Semigallia German: Herzogtum Kurland und Semgallen Latvian: Kurzemes un Zemgales hercogiste		Latvia	In 1915 the Imperial German forces occupied the Russian Courland Governorate and the Treaty of Brest-Litovsk ended the war in the east, so the local ethnic Baltic Germans established a Duchy under the German crown from that part of Ober Ost, with a common return of civil administration in favor of military. This state was very swiftly merged with the Baltic State Duchy, and German-occupied territories of Russian Empire in Livonia and Estonia, into a multi-ethnic United Baltic Duchy.
March 9, 1918	Government in exile (since 1919)	Belarusian Democratic Republic Belarusian: Беларуская Народная Рэспубліка		Belarus
April 29, 1918	December 14, 1918	Ukrainian State Ukrainian: Українська Держава		Ukraine
May 26, 1918	February 25, 1921	Democratic Republic of Georgia Georgian: საქართველოს დემოკრატიული რესპუბლიკა		Georgia
June 25, 1918	April 2, 1919	Crimean Regional Government Russian: Крымское краевое правительство		Crimea
September 22, 1918	November 28, 1918	United Baltic Duchy German: Vereinigtes Baltisches Herzogtum Estonian: Balti Hertsogiriik Latvian: Apvienotā Baltijas hercogiste		Latvia and Estonia

Ottoman Empire

Created	Disestablished	Puppet State	Flag	Country/territory	Notes
August 31, 1913	October 25, 1913	Provisional Government of Western Thrace Turkish: Garbi Trakya Hükûmet-i Müstakilesi Greek: Προσωρινή Κυβέρνηση Δυτικής Θράκης		Kingdom of Bulgaria	Was a provisional republic which was established by the Turkish minority in Thrace, after the Ottoman Empire lost its lands in this region. It was the product of the Ottoman intelligence agency, Teşkilat-ı Mahsusa, in terms of organizational structure and organizers, and they had remarkably common characteristics with the other Turkish puppet government.[1]
6 March, 1917	30 November, 1922	Mountainous Republic of the Northern Caucasus Turkish: Kuzey Kafkasya Dağlık Cumhuriyeti
May 28, 1918	April 28, 1920	Azerbaijan Democratic Republic Azerbaijani: Azərbaycan Demokratik Cümhuriyyəti		Azerbaijan
December 1, 1918	April 19, 1919	Provisional National Government of the Southwestern Caucasus Turkish: Güneybatı Kafkas Geçici Milli Hükûmeti Azerbaijani: Cənub-Qərbi Qafqaz Cümhuriyyəti		Caucasus Viceroyalty	Was a provisional republic which was established by the Turkish minority in the Caucasus, after the Ottoman Empire lost its lands in this region. It was the product of the Ottoman intelligence agency, Teşkilat-ı Mahsusa, in terms of organizational structure and organizers, and they had remarkably common characteristics with the other Turkish puppet government.[1]

Allies

Others

These countries were not under the control of the warring parties, but were created during the war. Specific countries were created for individual needs.

Created	Disestablished	Puppet State	Flag	Country/territory	Notes
February, 1918	March 20, 1918	Donetsk-Krivoy Rog Republic Russian: Донецко-Криворожская советская республика Ukrainian: Донецько-Криворізька Радянська Республіка		Soviet Russia	See also: DPRR-Soviet Russia relations The state, remotely controlled by Soviet Russia,[2] was founded by Joseph Stalin's close friend Fyodor Artyom in 1918.[3] But the DKRR was disliked by Vladimir Lenin. The capital of the republic was soon overthrown by the Germans again, and after the Soviet Red Army regained control of the territory, the country was dissolved at Lenin's request.