| • 07/09/2021 Men's Under 16s: Squad selected for training camp in Siedlce (20 Sep - 23 Sep) |
| # | pos | name | club |
| G |  Fabian Borysiuk |
 TOP 54 Biała Podlaska |
|
| G | Aleksander Mickielewicz | Legia Warszawa |
|
| G | Miłosz Piekutowski | Jagiellonia Białystok |
|
| G | Jakub Stępak | Wisła Kraków |
|
| D | Rafał Boczoń | Legia Warszawa |
|
| D | Jakub Grzejszczak | Legia Warszawa |
|
| D | Maksymilian Koj | Jagiellonia Białystok |
|
| D | Piotr Kowalik | Sandecja Nowy Sącz |
|
| D | Bartosz Krysiak | SPSCH Łódź |
|
| D | Jan Łabędzki | ŁKS Łódź |
|
| D | Dominik Szala |
Legia Warszawa |
|
| M | Kacper Bogusiewicz | Legia Warszawa |
|
| M | Jan Faberski | Jagiellonia Białystok |
|
| M | Filip Kowalski |
Wisła Kraków |
|
| M | Jakub Krzyżanowski | Wisła Kraków |
|
| M | Fryderyk Misztal |
Legia Warszawa |
|
| M | Adam Pieniądz | Wisła Kraków |
|
| M | Bartosz Pioterczak | Stal Stalowa Wola |
|
| M | Michał Prochwicz | Wisła Kraków |
|
| M | Filip Rejczyk | Legia Warszawa |
|
| M | Jakub Wójcik | APPN Mielec |
|
| F | Jakub Kolo | Jagiellonia Białystok |
|
| F | Tomasz Rojkowski | Legia Warszawa |
|
| Patryk Drygiel | Jagiellonia Białystok |
||
| Paweł Kosmalski | Polonia Warszawa |
||
| Hubert Leopold | Jagiellonia Białystok |
||
| Oliwier Niklas | AKS SMS Łódź |
||
| Radosław Szafrański | AKS SMS Łódź |
| Squad update: |
| • 20/09/2021 Men's Under 16s: Fryderyk Misztal has been added to the squad for training camp in Siedlce (20 Sep - 23 Sep) |
| • 17/09/2021 Men's Under 16s: Fabian Borysiuk, Filip Kowalski and Dominik Szala have been added to the squad for training camp in Siedlce (20 Sep - 23 Sep) |