The tournament will feature 32 nations from the six football world confederations:
| Confederation / Qualification Pathway | Slots | Qualification Details |
| Asian Football Confederation (AFC) | 6 | Direct qualification |
| Confederation of African Football (CAF) | 4 | Direct qualification |
| Confederation of North, Central America and Caribbean Association Football (Concacaf) | 4 | Direct qualification |
| South American Football Confederation (CONMEBOL) | 3 | Direct qualification; Brazil qualifies automatically as host and occupies one of CONMEBOL's three slots |
| Oceania Football Confederation (OFC) | 1 | Direct qualification |
| Union of European Football Associations (UEFA) | 11 | Direct qualification |
| Play-Off Tournament | 3 | Teams qualifying through the Play-Off Tournament |
| Total | 32 | Participating nations |