- Garaudy, Roger1
- Glaeser, Andreas1
- Graf, William D.1
- Gray, Alexander1
- Gregor, A. James1
- Gross, Feliks1
- Grünberg, Karl1
- Guérin, Daniel1
- Haimson, Leopold H.1
- Halévy, Elie1
- Haraszti, Sándor1
- Harrington, Michael1
- Healey, Denis1
- Hegedűs, András1
- Herzen, Aleksandr1
- Himka, John-Paul1
- Hobsbawm, E. J.1
- Hoover Institution on War, Revolution, and Peace1
- Horn, Gerd-Rainer1
- Howe, Irving1