Ōu Main Line

Ōu Main Line
Passing the moat of Yamagata Castle with narrow gauge tracks on the left and standard gauge on the right
Overview
Native name奥羽本線
StatusOperating
Owner JR East
Termini
Stations102
Service
TypeMain line
SystemJR East
History
OpenedDecember 1, 1894 (December 1, 1894)
Technical
Track length486.3 km (302.2 mi)
Number of tracks2
CharacterElevated, rural
Track gauge1,067 mm (3 ft 6 in)
1,435 mm (4 ft 8+12 in)
ElectrificationOverhead line20 kV 50 Hz AC
Route map

The Ōu Main Line (Japanese: 奥羽本線, Hepburn: Ōu-honsen) is a railway line in Japan, operated by the East Japan Railway Company (JR East). It connects Fukushima Station through Akita Station to Aomori Station. Since the opening of the Yamagata Shinkansen on July 1, 1992, the Fukushima–Yamagata section (as well as the Yamagata–Shinjō section since 1999) is sometimes referred to as the Yamagata Line (山形線, Yamagata-sen). The name of the line as a whole refers to the ancient provinces of Mutsu () and Dewa (), as it connects both ends of Mutsu by passing north–south through Dewa.