The 2005 season was an average one for Júbilo Iwata.

They came sixth in the J-League 1, advanced to the Quarterfinals in the Emperors and J-League Cups, and played a friendly against Real Madrid, which they lost.

League Data Site Júbilo Iwata received a bye to the fourth round as being part of the J.League Division 1.

Júbilo Iwata received a bye to the quarter-finals in order to avoid scheduling conflicts due to their participation in the AFC Champions League.

Júbilo Iwata qualified for this tournament as winners of the 2003 Emperor's Cup.