- Talât Paşa1
- Tamanian, Alexander1
- Teffi, N. A.1
- Tereshkova, Valentina1
- Thorn, Gaston1
- Timiriazev, Kliment1
- Tito, Josip Broz1
- Tsiolkovskii, Konstantin1
- Tupolev, Andrei1
- Tímár, László1
- Tʻēhlirean, Soghomon1
- Vas, Zoltán1
- Vernadskii, Vladimir1
- Volodymyr1
- Wieniewski, Ignacy1
- Wigglesworth, Smith1
- Yermash, Filip1
- Zariņš, Indulis1
- Zelinskii, Nikolai1
- Zhukovskii, Nikolai1