People of the Revolution and the USSR
- W. E. B. Du Bois W. E. B. Du Bois "Capitalism cannot reform itself": father of the modern Negro liberation movement who joined the Communist Party at 93
- Väinö Voionmaa Väinö Voionmaa A historian who linked scholarship with social democracy
- Sadri Maksudi Садри Максуди Tatar lawyer and Duma deputy who headed the national administration of Idel-Ural
- Eero Haapalainen Eero Haapalainen Trade union leader who commanded the Finnish Red Guards from January to March 1918
- Vsevolod Mikhailovich Eikhenbaum Всеволод Михайлович Эйхенбаум Russian anarchist intellectual who theorized anarchist synthesis and chronicled the revolution the Bolsheviks suppressed
- Vaclau Lastouski Вацлаў Ластоўскі Historian who headed the government of the Belarusian People’s Republic in exile, moved to Soviet Byelorussia and was executed
- John Maynard Keynes John Maynard Keynes British economist who left the Treasury in protest at the peace treaty and warned of the damage reparations would do
- György Lukács Lukács György Founder of Western Marxism: the Hungarian thinker who reoriented 20th-century Marxist philosophy with History and Class Consciousness
- Karl Korsch Karl Korsch Co-founder of Western Marxism, the German philosopher who challenged Marxist orthodoxy with Marxism and Philosophy
- Jüri Uluots Jüri Uluots Law professor and Estonia’s last constitutional prime minister who, acting as president, formed the Tief government in 1944
- Ahmet-Zaki Validi Әхмәтзәки Вәлиди Leader of the Bashkir national movement who proclaimed Bashkir autonomy, commanded the Bashkir Army and took it over to the Soviet side
- Walter Benjamin Walter Benjamin Frankfurt School's spectral companion, Marxist critic who dissected capitalist culture through the lens of mechanical reproduction
- Boris Konstantinovich Souvarine Boris Souvarine The only non-Bolshevik on all three leading Comintern bodies. And author of the first critical Stalin biography.
- Michał Kalecki Michał Kalecki The Marxist macroeconomist who formalized effective demand before Keynes
- James Martin Stagg James Martin Stagg The meteorologist whose forecast shaped an invasion
- C. L. R. Lionel Robert James C. L. R. James The Trinidadian Trotskyist and Pan-Africanist intellectual who revived the Haitian Revolution for Marxist historiography
- Solly Zuckerman Solly Zuckerman The scientific adviser who made bombing a field of operational research