The Ryōmō Line (両毛線, Ryōmō-sen) is a Japanese railway line connecting Oyama in Tochigi Prefecture with Maebashi in Gunma Prefecture.

84.4 km (52.4 mi) long, the line is owned and operated by the East Japan Railway Company (JR East).

The name refers to the fact that Gunma and Tochigi prefectures were once part of an ancient province called Keno (毛野), which was later split into Kōzuke (Gunma) and Shimotsuke (Tochigi).

[1] Prior to its discontinuation in 2021, Akagi limited express services, branded Swallow Akagi on weekdays, ran between Maebashi and Ueno or Shinjuku.

Takasaki to Oyama Takasaki to Maebashi (Takasaki Line through services) Ashikaga Ō-Fuji-Matsuri special services The Oyama to Kiryu section was opened in 1888 by the Ryomo Railway, and extended to Shin-Maebashi the following year.