The United Communist Party (UCP; Russian: Объединённая коммунистическая партия; ОКП; Ob'yedinonnaya kommunisticheskaya partiya, OKP) is a communist party in Russia created at the founding congress in Moscow on 15 March 2014.

In March 2014, 91 delegates, including 28 women, from 46 Russian regions participated in the Congress. The average age of the Congress delegates was 40 years old with the youngest delegate born in 1996. The Congress delegates included members of the Interregional Association of the Communists, the Left Front, the Revolutionary Workers' Party, the Russian Communist Party, the Communist Party, the Union of Communist Youth, a number of free trade unions and other left-wing organizations and non-partisans.

The Congress approved the program, Charter, and party symbols of the UCP. It also elected the Central Committee and the Central Auditing Commission. Vladimir Lakeev (Moscow) was elected First Secretary of the Central Committee of the UCP.

"Creating the UCP reflected the need for organizational unification of all who stand in positions of scientific communism in favor of socialism, democracy, internationalism and secularism, the party is not opposed to the other working-class parties, the proletarian movement is not customized for any sectarian principles. The party aims at the development of class consciousness in the masses of workers and the organization of their struggle for power.

The immediate task of the Party is the intensification of the struggle of the working people - the working class and its allies - for their political and economic rights and interests.

The UCP organizes its activities based on the principle of democratic centralism, the party of ideas of community and camaraderie".

The second Congress of the UCP was held in Moscow in November 2016.

The Third Congress of the United Communist Party was held on 9 February 2019 in the city of Moscow, following a decision by the Sixth Plenum of the party's Central Committee.