| Competition: | Japan Soccer League |
| Season: | 1965 |
| Winners: | Toyo Industries 1st title |
| League Topscorer: | Mutsuhiko Nomura (15 goals) |
| Matches: | 56 |
| Total Goals: | 216 |
| Average Attendance: | 3,706 |
| Nextseason: | 1966 |
The 1965 season in Japanese football saw the formation of the Japan Soccer League, the first national league in Japan for football clubs. Eight teams took part in the championship, playing on a home and away basis. Toyo Industries were crowned the first ever champions, whilst Nagoya Mutual Bank came bottom and entered and end of season promotion/relegation match to stay in the top flight. They won this, 6–3 on aggregate against Nippon Kokan.
Eight clubs entered the first ever edition of the Japan Soccer League; Furukawa Electric, Hitachi, Mitsubishi Motors, Nagoya Mutual Bank, Toyo Industries, Toyoda Automatic Loom Works, Yanmar Diesel and Yawata Steel