The Hokusei Line (北勢線, Hokusei-sen), commonly known as the Sangi Hokusei Line, is a 762 mm (2 ft 6 in) narrow gauge railway line owned and operated by Sangi Railway, a Japanese private railway company.

For many years, the line was owned by Kintetsu, a major private railway operator, but control was transferred to Sangi in April 2003.

Ise (as opposed to "Mie") is used in the name because the northern and central parts of present-day Mie Prefecture were called Ise Province during the Edo era before the modern prefecture system was established.

All services are classified as "Local" (普通, futsū), stopping at every station, and are driver-only operations.

The section of the line between Ōyamada Station (大山田駅) (present-day Nishi-Kuwana Station) and Sohara was opened on 5 April 1914 by the Hokusei Railway, with services operated using steam haulage.