| Yosan Line | |||
|---|---|---|---|
 7000 series near Tsushimanomiya Station | |||
| Overview | |||
| Locale | Kagawa, Ehime Prefectures | ||
| Termini | |||
| Stations | 94 | ||
| Service | |||
| Type | Heavy rail | ||
| Operator(s) | JR Shikoku | ||
| History | |||
| Opened | 1889 | ||
| Technical | |||
| Line length | 297.6 km (184.9 mi) | ||
| Track gauge | 1,067 mm (3 ft 6 in) | ||
| Electrification | Takamatsu — Iyoshi (1,500 V DC) | ||
| Operating speed | 130 km/h (81 mph) | ||
| |||
The Yosan Line (予讃線, Yosan-sen) is the principal railway line on the island of Shikoku in Japan, connecting the major cities of Shikoku, and via the Honshi-Bisan Line, with Honshu. It is operated by the Shikoku Railway Company (JR Shikoku), and is aligned approximately parallel with the Inland Sea coast, connecting the prefectural capitals of Takamatsu (Kagawa Prefecture) and Matsuyama (Ehime Prefecture) and continuing on to Uwajima. The name of the line comes from Iyo (伊予) and Sanuki (讃岐), the old names of Ehime and Kagawa, respectively.
The line consists of two alignments between Mukaibara and Iyo-Ōzu. The original main line follows the coast via Iyo-Nagahama, while the direct line, opened in 1986 as a bypass of the lengthy coastal route, goes through the mountains via Uchiko, part of which is known as the Uchiko Line (as it was originally part of the Uchiko branch), and all limited express trains now use this route.
Until 1988 the Yosan Line, along with the Dosan Line, connected with the Rail Ferry (from Uno) at Takamatsu Station. Direct services from Okayama now operate with the completion of the Great Seto Bridge system, over which the Honshi-Bisan Line travels.