The Sasshō Line is a railway line in Japan operated by Hokkaido Railway Company, which connects Sōen in Sapporo and Hokkaidō-Iryōdaigaku in Tōbetu, Ishikari District. Its name is made up of two characters from Sapporo (札幌) and Ishikari-Numata (石狩沼田), the latter of which was the terminus of the line until it was relocated to Shin-Totsukawa in 1972.

The Hokkaido Railway Company is one of the constituent companies of the Japan Railways Group, and is often referred to using its official abbreviation of JR Hokkaido . It operates intercity and local rail services in Hokkaido, Japan. The company introduced Kitaca, a smart card ticketing system, in autumn 2008.