An angular velocity correction device includes a horizontal angular velocity detection unit to detect horizontal axis angular velocity, that is mounted on a main unit attached to a moving object that moves along a predetermined movement surface, and that is made up of angular velocity around the horizontal axis which is orthogonal to the advancing direction of the moving object, occurring according to the inclination angle of the movement surface; a correction value generating unit to generate a correction value for correcting the horizontal axis angular velocity, based on the horizontal axis angular velocity that satisfies predetermined horizontal determining conditions of the horizontal axis angular velocity in the past; and a correction unit to correct the horizontal axis angular velocity using the correction value.