2008–09 Indonesia Super League U-21

Indonesian Super League U-21
Season2009-10
ChampionsPelita Jaya U-21
Matches played100
Top goalscorerAditya Putra Dewa (10 goals)

The 2008–09 Indonesia Super League U-21 season will be the first edition of Indonesia Super League U-21 (ISL U-21), a companion competition Indonesian super league that are intended for footballers under the age of twenty-one years.

Djarum, an Indonesian tobacco company will continue its participation as the competition's main sponsor.