| Iiyama Line | |
|---|---|
 KiHa 100 series DMU Rapid Oykot at Tōkamachi Station, May 2015 | |
| Overview | |
| Native name | 飯山線 |
| Status | In operation |
| Owner | .svg){kind=logo} JR East |
| Locale | Nagano, Niigata Prefectures |
| Termini | |
| Stations | 31 |
| Service | |
| Type | Heavy rail |
| Operator(s) | JR East |
| Rolling stock | KiHa 110 series DMU |
| History | |
| Opened | 1921 |
| Technical | |
| Line length | 96.7 km (60.1 mi) |
| Number of tracks | Entire line single tracked |
| Character | Rural |
| Track gauge | 1,067 mm (3 ft 6 in) |
| Electrification | None |
| Operating speed | 85 km/h (53 mph) |
The Iiyama Line (飯山線, Iiyama-sen) is a railway line in Japan linking Toyono Station in Nagano, Nagano Prefecture and Echigo-Kawaguchi Station in Nagaoka, Niigata Prefecture. It is operated by East Japan Railway Company (JR East).