Barcelona

FC Barcelona, valued at $5.1 billion, is the world's richest sports club by revenue ($1.3B in 2022/23), having implemented a 'financial levers' strategy to fund its Camp Nou renovation project (Spotify Camp Nou, reopening 2025 with 105,000 capacity). La Masia, its youth academy, produced Messi, Xavi, Iniesta, and Puyol - the core of both Barcelona's trebles and Spain's World Cup/Euro wins.