There are 9 mathematicians whose last name begin with OLSSZ.
| Olszak, Wacław | Technische Hochschule Wien | 1933 |
| Olszak, Wacław | Politechnika Warszawska | 1934 |
| Olszak, Zbigniew | Politechnika Wrocławska | 1978 |
| Olszewski, Kim | Claremont Graduate University | 1998 |
| Olszewski, Mariusz | Politechnika Wrocławska | 2020 |
| Olszewski, Wojciech | Princeton University | 2001 |
| Olszewski, Wojciech | Uniwersytet Warszawski | 1992 |
| Olszowiec, Cezary | Imperial College London | 2018 |
| Olszowy, Leszek | Uniwersytet im. Adama Mickiewicza w Poznaniu | 1996 |