The Keikyu 1000 series (京急1000形) was a DC electric multiple unit (EMU) train type formerly operated by the private railway operator Keikyu on commuter services in the Tokyo area of Japan from 1959 until June 2010.

Keikyu Corporation , also known as Keihin Kyūkō (京浜急行) or, more recently, Keikyū (京急), is a private railroad that connects inner Tokyo to Kawasaki, Yokohama, Yokosuka and other points on the Miura Peninsula in Kanagawa Prefecture. It also provides rail access to Haneda Airport in Tokyo. Keihin (京浜) means the Tokyo (東京) - Yokohama (横浜) area. The company's railroad origins date back to 1898, but the current company dates to 1948. The railway pioneered Kantō region's first electric train and the nation's third, after Hanshin Electric Railway and Nagoya Electric Railway (Meitetsu) with the opening of a short 2 km (1.2 mi) long section of what later became the Daishi Line in January 1899.