The Shinonoi Line (篠ノ井線, Shinonoi-sen) is a railway line in Nagano Prefecture, Japan, operated by the East Japan Railway Company (JR East).

Morning Liner A passing loop is located in Azumino, known as Hirase shingōjō (平瀬信号場).

A switchback is located in Azumino, known as Haneo shingōjō (羽尾信号場) A switchback is located in Azumino, known as Kuwanohara shingōjō (桑ノ原信号場) The Shinonoi to Nishijo section opened in 1900, and was extended via Matsumoto to Shiojiri in 1902.

The Akashina to Nishijo section was also double-tracked, but the original line was decommissioned in 1988.

[citation needed] The Shiojiri to Matsumoto section was electrified in 1964/5, and extended to Shinonoi in 1973, CTC signalling being commissioned on the entire line the previous year.