There are 5 mathematicians whose last name begin with SIW.
| Siwek, Edward | Uniwersytet Jagielloński | 1964 |
| Siweya, Hlengani | University of Durban-Westville | 2000 |
| Siwiec, Francis | University of Pittsburgh | 1972 |
| Siwko, John | University of California, Los Angeles | 1999 |
| Siwko, Magdalena | Rijksuniversiteit Groningen | 2008 |