Provided is a host vehicle position estimation device capable of accurately estimating the position of a host vehicle on a map even if there is no landmark that can be referred to on an image photographed using a camera. A host vehicle position is estimated on the basis of intermediate information about a landmark name and landmark distance for an intermediate object extracted from a photographed image of the surroundings of a host vehicle, distance information about the distance to the intermediate object, and landmark information stored beforehand about the landmark name and position.