The Keisei 3000 series (京成3000形) is a DC electric multiple unit (EMU) train type operated by the private railway operator Keisei Electric Railway on commuter services in the Tokyo area of Japan since 2003.

[5] Seventh-batch eight-car sets (referred to as the 3050 series) are primarily used on the Narita Sky Access Line.

[8] From 31 March 2013, WiMAX wireless broadband internet access was provided on all sets numbered 3051 onward.

[5] Two six-car sets, 3031 and 3032, were delivered during fiscal 2015, entering revenue service in February and March 2016 respectively.

[21] Starting from December 2019, 3050 subseries trains were re-liveried to match that of the 3000 series fleet, with set 3051 being the first to receive the mainline livery.