There are 4 mathematicians whose last name begin with KIJ.
| Kijlstra, Arnoldus | Rijksuniversiteit Groningen | 1903 |
| Kijne, Dono | Universiteit Utrecht | 1956 |
| Kijowski, Antoni | Institute of Mathematics, Polish Academy of Sciences | 2020 |
| Kijowski, Jerzy | Uniwersytet Warszawski | 1969 |