Kamiōoka Station is an interchange railway station located in Kōnan-ku, Yokohama, Kanagawa Prefecture, Japan, operated by the private railway operator Keikyū and the Yokohama Municipal Subway.

Kōnan-ku (港南区) is one of the 18 wards of the city of Yokohama in Kanagawa Prefecture, Japan. As of 2010, the ward had an estimated population of 221,536 and a density of 11,150 persons per km2. The total area was 19.87 km2.