Sangi Railway Co., Ltd. (三岐鉄道株式会社, Sangi Tetsudō) is a private railway company in Mie Prefecture, Japan, which also operates bus lines.

The Sangi Line was opened by Onoda Cement in 1931 as a freight-only line to service its cement plant at Nishi-Fujiwara.

Passenger services were introduced in 1952, and in 1954, the line was electrified at 1,500 V DC, and the company purchased an electric locomotive from JNR to haul its cement trains.

The Sangi Line (三岐線) runs from Kintetsu-Tomida Station in Yokkaichi to Nishi-Fujiwara Station in Inabe.

The Hokusei Line (北勢線) runs from Nishi-Kuwana Station in Kuwana to Ageki Station in Inabe.