| I-League 2008–09 | |
| League: | I-League |
| Sport: | Association football |
| Pixels: | 200px |
| Duration: | 26 September 2008– 16 April 2009 |
| No Of Teams: | 12 |
| Tv: | Zee Sports |
| Season: | I-League season |
| Season Champs: | Churchill Brothers 1st I-League title 1st Indian title |
| Season Champ Name: | Champions |
| Top Scorer: | Odafe Onyeka Okolie |
| Matches: | 132 |
| Total Goals: | 318 |
| Season Champ2 Name: | Champions |
| Seasonslist: | List of I-League seasons |
| Seasonslistnames: | I-League |
| Prevseason Link: | 2007–08 I-League |
| Prevseason Year: | 2007–08 |
| Nextseason Link: | 2009–10 I-League |
| Nextseason Year: | 2009–10 |
The 2008–09 I-League season began on 26 September 2008 and finished on 16 April 2009 with a break in December for the Federation Cup and Durand Cup. Most games this season were played on Saturday's and Sunday's to attract larger crowds. After a successful first season for the I League, the second season featured 12 teams from four cities – again this would be expanded in the 2009–10 season to 14 teams.
The champion in the I-League qualified for the AFC Champions League 2010 qualifying playoffs in 2010, while the bottom two teams were relegated to I-League 2nd Division for the next season.
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