| Season | 2004 |
|---|---|
| Dates | 28 March – 5 December |
| Champions | Otsuka Pharmaceuticals 2nd JFL title 2nd D3 title |
| Promoted | Otsuka Pharmaceuticals Thespa Kusatsu |
| Relegated | Kokushikan University (expelled by JFA) |
| Matches played | 239 |
| Goals scored | 746 (3.12 per match) |
| Top goalscorer | Takehiro Hayashi (21 goal total) |
| Highest attendance | 13,743 (Round 27, Thespa vs. Otsuka) |
| Lowest attendance | 85 (Round 23, Kokushikan vs. Tottori) |
| Average attendance | 1,141 |
← 2003 2005 → | |
The 2004 Japan Football League (Japanese: 第6回日本フットボールリーグ, Hepburn: Dai Rokkai Nihon Futtobōru Rīgu) was the sixth season of the Japan Football League, the third tier of the Japanese football league system.