| • 14/05/2021 Men's Under 19s: Squad selected for training camp in Gniewino (31 May - 3 Jun) |
| # | pos | name | club |
| G | Hubert Graczyk |  Arsenal |
|
| G | Filip Marschall | Aston Villa |
|
| G | Jakub Ojrzyński | Liverpool |
|
| D | Filip Balcewicz |  Pogoń Szczecin |
|
| D | Filip Borowski | Lech Poznań |
|
| D | Kamil Duda | Górnik Łęczna |
|
| D | Daniel Hoyo-Kowalski | Wisła Kraków |
|
| D | Dominik Marczuk | Stal Rzeszów |
|
| D | Noah Mrosek |  Borussia Dortmund |
|
| D | Maksymilian Pingot | Lech Poznań |
|
| M | Jakub Bieroński | Podbeskidzie Bielsko-Biała |
|
| M | Krystian Borecki |  Anderlecht |
|
| M | Dawid Bugaj |  SPAL |
|
| M | Adrian Bukowski | ¦l±sk Wrocław |
|
| M | Mariusz Fornalczyk | Pogoń Szczecin |
|
| M | Jakub Kisiel | Legia Warszawa |
|
| M | Paweł Koncewicz-Żyłka | Wisła Kraków |
|
| M | Daniel Krasucki | RB Leipzig |
|
| M | Mateusz Lipp | FC Schalke 04 |
|
| M | Mateusz Łęgowski | Pogoń Szczecin |
|
| M | Kacper Smorgol | RB Leipzig |
|
| M | Olivier Sukiennicki | Bradford City |
|
| M | Kacper Urbański | Bologna |
|
| F | Aleksander Buksa | Wisła Kraków |
|
| F |  Kacper Chełmecki |
Wisła Kraków |
|
| F |  Mateusz Musiałowski |
Liverpool |
|
| F | Hubert Turski | Pogoń Szczecin |
|
| F | Szymon Włodarczyk | Legia Warszawa |
| Squad update: |
| • 26/05/2021 Men's Under 19s: Mateusz Musiałowski has been removed from the squad for training camp in Gniewino (31 May - 3 Jun) |
| • 26/05/2021 Men's Under 19s: Kacper Chełmecki has been added to the squad for training camp in Gniewino (31 May - 3 Jun) |