of 299 · 22nd in UEFA
Projected roster. Final squads will be updated before the World Cup starts.
| Pos | Name | Detailed Pos | Club | League |
|---|---|---|---|---|
| DEF | Dávid Hancko | CB | Atlético Madrid | La Liga |
| MID | Stanislav Lobotka | CM | Napoli | Serie A |
| DEF | Milan Škriniar | CB | Fenerbahçe SK | Süper Lig |
| GK | Dominik Greif | GK | Olympique Lyonnais | Ligue 1 |
| DEF | Denis Vavro | CB | VfL Wolfsburg | Bundesliga |
| FWD | Lukáš Haraslín | LW | Sparta Praha | První liga |
| GK | Martin Dúbravka | GK | Burnley | Premier League |
| DEF | Martin Valjent | CB | RCD Mallorca | La Liga |
| MID | Patrik Hrošovský | CM | KRC Genk | Pro League |
| MID | Ondrej Duda | CM | Al Ettifaq | Pro League |
| MID | Albert Rusnák | CAM | Seattle Sounders FC | Major League Soccer |
| GK | Marek Rodák | GK | Al Ettifaq | Pro League |
| MID | Matúš Bero | CM | VfL Bochum 1848 | 2. Bundesliga |
| MID | Ivan Schranz | LM | SK Slavia Praha | První liga |
| MID | Tomáš Suslov | CAM | Hellas Verona FC | Serie A |
| MID | László Bénes | CM | Kayserispor | Süper Lig |
| FWD | Leo Sauer | LW | Feyenoord | Eredivisie |
| DEF | Adam Obert | LB | Cagliari | Serie A |
| DEF | Tomáš Nemčík | CB | Rosenborg BK | Eliteserien |
| DEF | Ľubomír Šatka | CB | Samsunspor | Süper Lig |
| MID | Tomáš Rigo | CM | Stoke City | Championship |
| FWD | Róbert Boženík | ST | Stoke City | Championship |
| FWD | Dávid Ďuriš | LW | Rosenborg BK | Eliteserien |
| DEF | Norbert Gyömbér | CB | Al Kholood | Pro League |
| FWD | Dávid Strelec | ST | Middlesbrough | Championship |
| DEF | Samuel Kozlovský | LB | Widzew Łódź | Ekstraklasa |
