The Maizuru Line (舞鶴線, Maizuru-sen) is a 26.4 km (16.4 mi) railway line in Kyoto Prefecture, Japan, operated by the West Japan Railway Company (JR West).

The line opened in the autumn of 1904 to transport troops and materiel to the naval base and Maizuru-Higashi Port during the Russo-Japanese War, which commenced in February of that year.

[1] Although built by the Japanese Government, it was initially leased to the Bantsuru Railway Co, which opened the Ayabe – Fukuchiyama section of what is now the Sanin Main Line the same year.

The company was nationalised in 1907, the year the 2 km Maizurukō Line (舞鶴港線) from Nishi-Maizuru to Maizuru Port opened.

[2] From the start of the revised timetable on 18 March 2023, 125 series trainsets began operation on the Maizuru Line.