| Competition: | Japan Football League |
| Season: | 2005 |
| Dates: | 27 March – 4 December |
| Winners: | Ehime FC 1st JFL title 1st D3 title |
| Promoted: | Ehime FC |
| League Topscorer: | Hirokazu Otsubo (18 goals total) |
| Matches: | 240 |
| Total Goals: | 731 |
| Highest Attendance: | 7,726 (Round 21, Ehime vs. SE Tokyo) |
| Lowest Attendance: | 102 (Round 27, Printing vs. SE Tokyo) |
| Average Attendance: | 815 |
| Prevseason: | 2004 |
| Nextseason: | 2006 |
The was the seventh season of the Japan Football League, the third tier of the Japanese football league system.
It was contested by 16 teams, and Ehime FC won the championship.
Mitsubishi Motors Mizushima, Ryutsu Keizai University and Honda Lock were promoted from Regional Leagues by the virtue of their placing in the Regional League promotion series.
| Rank | Scorer | Club | Goals[1] |
|---|---|---|---|
| 1 |  Hirokazu Otsubo | Sagawa Express Osaka | |
| 2 | Shinji Honda | Sony Sendai | |
| 3 | Mitsuru Hasegawa | YKK AP | |
| 4 |  Amaral | FC Horikoshi | |
| 5 | Naoki Ishibashi | ALO's Hokuriku | |
| Kohei Masumoto | SC Tottori | ||
| Yoshihide Ogushi | Honda Lock | ||
| Kodai Suzuki | Honda FC | ||
| Manabu Wakabayashi | Tochigi SC | ||
| 10 | Hiroki Kishida | YKK AP | |
| Kentaro Yoshida | Tochigi SC | ||
No relegation has occurred due to expansion of the league to 18 teams. At the end the season, FC Ryukyu, JEF Reserves and Rosso Kumamoto were promoted from Regional leagues by the virtue of their placing in the Regional League promotion series.