- Krzhizhanovskii, Gleb1
- Kulibin, Ivan1
- Kurchatov, Igor1
- Kuzmin, M. A.1
- Laks, Szymon1
- Lebedev, Sergei1
- Legall, Alberto1
- Leonov, Alexey1
- Lomonosov, Mikhail1
- Lunev, Afanasii1
- Lévesque, René1
- Mancham, James1
- Mariia1
- Marx, Karl1
- Mary1
- Maurer, Monica1
- Medvedev, Roy Aleksandrovich1
- Mendeleev, Dmitrii1
- Michurin, Ivan1
- Mirska, Klara1