The Ao Line (粟生線, Ao-sen) is a commuter railway line in Hyōgo Prefecture, Japan, operated by the Kobe Electric Railway (Shintetsu).

It connects Kobe with its northwestern suburb, Ono.

The Miki Electric Railway Co. opened the Suzurandai – Hirono Golf-jo-mae on 28 December 1936.

In 1947 the company merged with the Kobe Electric Railway Co., which extended the line to Ono on 28 December 1951, and from Ono to Ao on 10 April 1952.

This article about a Japanese railway line–related topic is a stub.