The Nishitetsu 9000 series (西鉄9000形) is an electric multiple unit (EMU) train type operated by the private railway operator Nishi-Nippon Railroad (Nishitetsu) in Japan on the Nishitetsu Tenjin Ōmuta Line since 20 March 2017.

Ten sets of five three-car and five two-car formations are in service as of 2021.

[2] The 9000 series trains operate on Nishitetsu Tenjin Ōmuta Line express and all-stations local services.

[5] LED lighting is used in the interiors, and two 17-inch LCD passenger information screens are provided above each of the doorways with information provided in four different languages (Japanese, English, Korean, and Chinese).

[2] The first two trains (one three-car and one two-car set) entered revenue service on 20 March 2017.