The following is a list of squads for each nation competing in the 2024 WBSC Premier12. Participating nations had to submit their final 28-man rosters no later than 10 October 2024. WBSC rules require teams to carry at least 13 pitchers and two catchers in their squads.[1] If applicable, the club listed is the club a player was with at the start of the tournament.
| P | Pitcher |
|---|---|
| C | Catcher |
| IF | Infielder |
| OF | Outfielder |