The Arima Line (神戸電鉄有馬線, Kōbe Dentetsu Arima-sen) is a commuter railway line in Kobe, Japan operated by Kobe Electric Railway.

[1] It connects central Kobe with its northern suburbs in Kita-ku and Arima Onsen.

The line is 22.9 kilometres (14.2 mi) long, extending from Minatogawa in Hyogo-ku to Arima Onsen in Kita-ku.

Service is divided at Arimaguchi, where most trains from Shinkaichi continue on the Sanda Line, with short-run trains operating between Arimaguchi and Arima Onsen, the line terminus.

The entire line opened in 1928, 1,067 mm (3 ft 6 in) gauge and electrified at 1500 VDC.