The Keikyu Main Line is a railway line in Japan, operated by the private railway operator Keikyu. The line runs through the Tokyo wards of Minato, Shinagawa, Ōta, and the Kanagawa municipalities of Kawasaki, Yokohama and Yokosuka. The Keikyu Main Line began as a short 2 km line in 1895, and by 1905 had extended from Shinagawa Station in Tokyo to central Yokohama.
