The Holodomor was one of several criminal faminogenic genocides Bolshevik Russia committed to destroy resistance of several nations, Ukraine, Belarus, Don Cossack, Kuban Cossak, Kazakh, Moldavia and other nations to Russian imperialism and colonialism.
In Ukraine, the Holodomor genocides perpetrators were first and foremost these arch-criminals:
Secretary General of the Central Committee of the All-Union Communist Party of Bolsheviks (VKP(b) CC) Josef Stalin (Jugashvili);
VKP(b) CC member, Chair of the Council of People's Commissars of the Union of Soviet Socialist Republics (USSR) Viacheslav Molotov (Skriabin);
VKP(b) CC secretary Lazar Kaganovich;
VKP(b) CC secretary Pavel Posthaste;
VKP(b) CC member, Secretary General of the Central Committee of the Communist Party of Bolsheviks of Ukraine (KP(b)U) Stanislav Kosior;
VKP(b) CC member, Chair of the Union of People's Commissars of the Ukrainian Soviet Socialist Republic Vlad Chubar, and
VKP(b) CC member, Second Secretary of the KP(b)U CC Mendel Chatayevich.
Others such as Yevdokimov, the OGPU’s plenipotentiary in the North Caucasus, and
V. Balytsky, plenipotentiary of the OGPU in Ukraine
Nikolai Yezhov and Yagoda could be added to the inner circle.
Of course, the wider circle included their subordinates, and entirety of Bolshevik Russia's occupation force including hundreds of lower ranking Bolsheviks and hundreds of thousands of Red Army, NKVD secret police, and various "shock troops and Komsomol "volunteeers" who invaded the countryside and came from Russia proper did the actual dirty work.
In line with Russia's colonialism policy the Holodomor was followed by colonization of Ukraine, Kazakhstan and other areas ethnically cleanzed by Russians from Russia.