The Komsomol of Ukraine, officially the Leninist Communist League of Youth of Ukraine (ЛКСМУ, Ukrainian: Ленінська Комуністична Спілка Молоді України; Russian: Ленинский Коммунистический Союз Молодёжи Украины), was a youth organization in the Ukrainian Soviet Socialist Republic under the Communist Party of Ukraine, a component part of the All-Union Lenin's Communist League of Youth (Komsomol).

Soon after the Bolshevik revolution in Petrograd, also known as the "Great October Revolution", in order to increase ideological and organizational influence on the leagues and youth in general in all cities of the former Imperial Russia, Bolshevik started the process of establishing a united centralized communist league of youth.

In October 1918 at the First Congress of RKSM were adopted the program and statute of the league where it was proclaimed its basic tasks to spread ideology of communism, revolutionary upbringing of youth, active participation in development of the Soviet State.

The organizational principle in development of Komsomol was a "democratic centralism" that as in the Bolshevik party ensured full control over members of organization on the part of its leaders.

At the First Congress of KSRMU (June–July, 1919) it was declared that the league shares the program and tactics of the Communist Party (Bolsheviks) of Ukraine, operates under its leadership.

According with the KSRMU statute, the organization was accepting only "workers' youth" (that limitation was implemented because as it was explained in the document no to "dilute" the league with persons who do not have the "proletarian class training").