The Meitetsu Nishio Line (名鉄西尾線, Meitetsu Nishio-sen)[1] is a railway line operated by the private railway operator Nagoya Railroad (Meitetsu) in Aichi Prefecture, Japan, connecting Shin Anjō and Kira Yoshida.

It originally included a branch from Nishio-guchi to Okazaki-shin on the Tokaido Main Line, which closed in 1962 (see History section below).

In 1926, the line was acquired by the Aichi Electric Railway, which between 1928 and 1929 converted the line to 1,067 mm (3 ft 6 in) gauge, electrified it at 600 V DC, and connected to the line from Shin Anjō (see below) at Nishio-guchi, abandoning the 762 mm gauge section between there and Kami Yokosuka.

In the meantime, the Hekikai Electric Railway opened the Shin Anjō to Yonezu section, electrified at 1,500 V DC, in 1926, and extended the line to Nishio in 1928, with a connection to Kami Yokosuka opening in 1930.

With the start of the revised timetable on 16 March 2019, Nishio Line Express services began stopping at Minami Sakurai Station, and Semi-Express services were discontinued.