People of the Revolution and the USSR
- Solomon Abramovich Lozovsky Соломон Абрамович Лозовский The Bolshevik who led the Profintern and was shot with the Jewish Anti-Fascist Committee
- Angelica Isaakovna Balabanova Анжелика Исааковна Балабанова The Comintern's first secretary, who taught Mussolini and branded him traitor
- Serafima Ilyinichna Gopner Серафима Ильинична Гопнер First woman to lead the Ukrainian Bolshevik party; delegate to all seven Comintern congresses
- Otto Wille Kuusinen Otto Wille Kuusinen From Finnish labour leader to Comintern veteran and Khrushchev's theoretician
- Osip Aronovich Piatnitsky Осип Аронович Пятницкий From Comintern underground courier to its organizational backbone, then devoured by the machine he built
- Grigory Yevseyevich Zinoviev Григорий Евсеевич Зиновьев He opposed October, vouched for Stalin, and was shot by him
- Lev Borisovich Kamenev Лев Борисович Каменев The party’s licensed voice of caution: his warnings outlived him
- Dmitry Zakharovich Manuilsky Дмитрий Захарович Мануильский ECCI secretary who carried out the Stalinist purges (1928–1943)
- Mikhail Markovich Borodin Михаил Маркович Бородин Sun Yat-sen's political advisor, architect of the First United Front, and the Comintern's global emissary
- Karl Berngardovich Radek Karol Radek The polemicist who survived trial only to die in prison
- Nikolai Ivanovich Bukharin Николай Иванович Бухарин The “favourite of the whole party,” killed in its name
- Vilgelm Georgiyevich Knorin Вильгельм Георгиевич Кнорин Architect of Comintern propaganda and party history compiler
- Andrei Klyushnikov Андрей Клюшников Comintern agent known as Nenin who built revolutionary committees in southern Bessarabia and led the Tatarbunary Uprising
- Grigory Naumovich Voitinsky Григорий Наумович Войтинский The Comintern's first envoy who midwifed the Chinese Communist Party
- Vissarion Vissarionovich Lominadze Виссарион Виссарионович Ломинадзе Comintern architect of the Canton uprising who led the first party-apparatus challenge to Stalin's collectivization
- Pavel Aleksandrovich Mif Павел Александрович Миф Comintern China specialist who cultivated the 28 Bolsheviks