First All-Ukrainian Congress of Soviets () was a congress of Soviets (councils) of workers, peasants, and Red Guards deputies that took place in Kharkiv on December 24-25, 1917.
On December 21, 1917 the Red Guards of the Soviet Russia led by Vladimir Antonov-Ovseyenko occupied Kharkiv. At night on December 22, 1917 the Russian Red Guards with local Bolsheviks disarmed Ukrainian military units and arrested leaders of the Kharkiv City Council and garrison. On December 23, 1917 Bolsheviks established a revkom (revolutionary committee). The headquarters of a local Red Guard was established on December 14, 1917 and was located in the Stock Exchange building at Market Square (today Ploshcha Konstytutsii - Constitution Square).
The Congress of Soviets took place on December 24-25 1917, in the (Market Square) in Kharkiv. The congress initially gathered 964 participants, which later rose to 1250. The congress reviewed several issues: attitudes towards the Central Rada of the Ukrainian People's Republic, war and peace, organization of military forces, about Ukraine and Soviet Russia, estate and financial issues and others.
The congress approved the Treaty of Brest-Litovsk between the Russian SFSR and Central Powers, declared the independence of the Soviet Ukrainian People's Republic as a federative republic of Soviet Russia, ratified the decree on socialization of land adopted by the 3rd All-Russian Congress of Soviets, and decrees on the 8-hour work day and labor control, organization of the Workers-Peasant Red Army of Ukraine. The policy of the Central Council of Ukraine in the resolution "On political moment" was condemned, requesting withdrawal of the Austrian and German Armed Forces from Ukraine. Participants elected the new composition of the Central Executive Committee of Ukraine of 102 members headed by Vladimir Zatonsky.
There were about 200 delegates with deciding votes and six with consultative. A large majority were held by the Bolsheviks.
The congress elected 41 members to the Central Executive Committee (CVK), 35 of which were Bolsheviks. Twenty more seats were reserved for peasants deputies that were supposed to elected at an All-Ukrainian Congress of Soviet of peasant deputies. The head of the CVK was elected Yukhym Medvedev. The congress also established the People's Secretariat.
To the People's Secretariat were elected Nikolay Skripnik, Vladimir Zatonsky and Emmanuil Luganovsky (Portugeis) who were not elected to the All-Ukrainian Central Executive Committee. Later to the People's Secretariat were added Yevgeniy Neronovich, Yuriy Kotsiubynsky, Vladimir Antonov-Ovseyenko, Ivan Klimenko.