- Leonid, Makhlis1
- Leonid, Mikhailov1
- Leonid, Pylaev1
- Leontovich, M.A.1
- Lev, Kruglyi1
- Lillis, Shane B.1
- Lipkovskii, Leonid1
- Litván, György1
- L’Écuyer, Maxime-Claude1
- Maiboroda, Platon1
- Makudinova, Giuzel'1
- Maramzin, Vladimir1
- Mashkova, Valentina1
- Medvedev, Zhores1
- Mendzheritskaia, E.I.1
- Meshko, Oksana1
- Mikhail, Roshchin1
- Mikhailov, Boris1
- Milošević, Ana1
- Mongitore, Rodolfo1