2025 FIM Supercross World Championship
The 2025 FIM Supercross World Championship was a supercross series sanctioned by the Fédération Internationale de Motocyclisme (FIM) as the world championship of the sport. This was the fourth season organized by Australian promoter SX Global.
Eli Tomac was the reigning champion in the WSX class for 450cc motorcycles, whilst Shane McElrath was the reigning champion in the SX2 class.
Prior to the start of the season, the series organisers announced that all licensed teams had signed the 'Geneva Agreement'. Along with setting out how the championship would support licensed teams for the following three seasons, Stark Future was announced as a new team in the series. Stark Future will be the first team to run electric-powered motorcycles in the series.