The Nankai 9000 series (南海9000系) is an electric multiple unit (EMU) train type operated by the private railway operator Nankai Electric Railway in Japan since 1985.

[1] The 9000 series is used on Nankai Line commuter services singly or coupled with 12000 series EMUs on Southern Premium limited express services to provide non-reserved accommodation.

[1] From 10 December 2015, four-car sets began operating in multiple with 12000 series sets on Southern limited express services.

The set received a wood-themed interior, variable-voltage/variable-frequency traction motor control, and a limited-time orange livery.

[4][5] The interior was designed based on a customer survey conducted in February 2018.