A navigation device (100) is connected to a mobile communication device (150) by a radio communication. The storage unit (106) stores a map DB (131). A control unit (107) acquires telephone book data (132) and history data (133) on calling/called operations performed by the mobile communication device (150) from the mobile communication device (150) and stores the data in the storage unit (106). A telephone number of a partner is correlated with position information which can be set for a navigation destination when they are respectively stored in the telephone book data (132) and the history data (133). A control unit (107) receives an instruction input for selecting as the destination, the position indicated by the position information correlated to the telephone book data (132) or the history data (133). The control unit (107) sets the position indicated by the position information correlated to the selected telephone book data (132) or the history data (133) as the navigation destination. Thus, navigation is supported by using the information store din the mobile communication device.