The Dota 2 Esports Nations Cup 2026 is an international country-based esports tournament held in Riyadh, Saudi Arabia, and organized by the Esports World Cup Foundation (EWCF). It is the inaugural edition of the Esports Nations Cup, a national-team competition that expands upon the Esports World Cup format by featuring teams representing their countries rather than esports organizations. The tournament features 32 participating teams, consisting of 16 teams qualified through the Esports Nations Cup National Ranking, 16 teams from regional qualifiers, and additional Wildcard entries. During the group stage, the teams are divided into four groups of eight and compete in a single round-robin format, with all matches played as best-of-one (Bo1). The top four teams from each group advance to the playoffs. The playoffs are conducted in a single-elimination bracket. All playoff matches are played as best-of-three (Bo3), except for the Grand Final, which is played as a best-of-five (Bo5).