- Ipatov, Aleksei Nikolaevich1
- Jaugey, Florence1
- Jemolo, Arturo Carlo1
- Joffily, Jose1
- John Paul1
- Jūra, Klemensas1
- Kanapa, Jean1
- Kaneko, Ann1
- Kaps, Johannes1
- Kardos, László1
- Karsavin, L. P.1
- Kartashev, Anton Vladimirovich1
- Katunarich, Sergio M.1
- Kawalerowicz, Jerzy1
- Kałuski, Marian1
- Kertsner, Ronit1
- Kis, György1
- Kiss, Réka1
- Kleiman, Vivian1
- Kliuchevskii, Vasilii Osipovich1