The 2005 FINA Men's Water Polo World League was the fourth edition of the annual event, organised by the world's governing body in aquatics, the FINA. After a preliminary round and a semifinal round, the Super Final was held in Belgrade, Serbia and Montenegro.
Five teams from each pool advanced to the semifinal round. The semifinal round hosts (Canada and the United States) were guaranteed qualification, as was the Super Final host (Serbia and Montenegro).
Three teams from each pool advanced to the final round. The final round hosts (Serbia and Montenegro) were guaranteed qualification.
The top two teams advanced to the final, while the next two played for bronze.