The Keisei AE series (京成AE形) is a DC electric multiple unit (EMU) train type operated by the private railway operator Keisei Electric Railway on Skyliner limited express services to and from Narita International Airport in Japan via the Keisei Narita Airport Line. The first set was delivered in May 2009, and entered service in July 2010, replacing the Keisei AE100 series EMUs previously used on these services.