The Tobu Kiryu Line (東武桐生線, Tōbu Kiryū-sen) is a railway line in Japan operated by the major private railway operator Tobu Railway.

The line is a 20.3 km (12.6 mi) branch off the Isesaki Line at Ōta Station, southbound to Akagi Station.

All trains stop at all stations on the line, including limited express Ryomo services to and from Asakusa in Tokyo.

The Yabuzuka Quarry opened a 610 mm (2 ft) gauge handcar line between Ota and Yabuzuka in 1911 to haul stone blocks.

[citation needed] The line was acquired by Tobu in March 1913, rebuilt to 1,067 mm (3 ft 6 in) gauge and extended to Aioi on 19 March 1913, operating using steam haulage.