The 711 series (711系, 711-kei) was an AC electric multiple unit (EMU) train type operated by Hokkaido Railway Company (JR Hokkaido) on Sapporo area suburban services in Hokkaido, Japan, from 1968 until March 2015.

It was the first AC EMU train to be operated in Japan by the former Japanese National Railways (JNR).

[2] By 1 October 2014, 36 vehicles (12 sets) were still in service, all based at Sapporo Depot.

[3] The 711 series trains were formed as three-car sets with one motored intermediate car and two non-powered driving trailer cars, as shown below.

[1] Two prototype two-car sets, numbered KuMoHa 711-901 + KuHa 711-901 and KuMoHa 711-902 + KuHa 711-902, were delivered in February 1967 for test running ahead of the start of electric suburban services between Otaru and Takikawa from 1968.