A navigation apparatus includes a base unit fastenable to a dashboard at a driver's seat of a vehicle, a front panel unit attachable to and detachable from the base unit and with a display displaying map data, and a microcomputer adapted to perform a navigation function to indicate a determined location of the vehicle on the map data. The navigation apparatus is configured such that a part of the front panel unit projects from a surface of the dashboard toward a user seated in the driver's seat, as viewed from side, when the front panel unit is attached to the base unit. With this, the degree of freedom of front panel unit attachment/detachment with respect to the base unit is improved without sacrificing the appearance of the navigation apparatus.