A map image display apparatus for displaying a map image with at least one
name for entering a command to change the map image, and switching the
displayed map image, when accepting the command with the name designated,
to a map image in a vicinity of the designated name. The apparatus
includes a defined region storage device which stores information of a
name-defined region indicated by the name, a center position thereof, and
a display scale enabling displaying substantially the whole name-defined
region within one screen; and a display target determination device which
determines a map image to be displayed at the display scale with the
center position of the name-defined region taken as a display center,
referring to the stored information.