A Witness to History: World Maps in Early - Modern Japan: Guide to old Japanese cartography and how they viewed themselves in the world.
About.com: Map of Japan: Features a free blank outline map of the country of Japan to print out for educational, school, or classroom use.
Altapedia.com: Japan Geographical Map: Features geographical and political maps of Japan.
Japan Travel Updates: Japan Maps: Includes a country-wide map (545K), regional maps, and transportation maps.
Japanese Historical Maps from UC Berkeley: Online gallery of 2,300 early maps of Japan from the 17th to early 20th century.
Mapquest.com: Map of Japan: Includes a zoomable map of Japan from satellite view to street view.
Maps of Japanese Warlords: Complete and detailed maps of Japan in the Warring States period, all the provinces, warlords' domains, locations of battles, and so on.
Old Maps of Japan: Index of antique historical and political maps of Japan.
Prefecture Detailed Maps: Large maps of each of the prefectures showing major cities and towns.
Regions and Cities: Japan Information Network maps of various regions in prefectures.
The Geographical Survey Institute: Japan Maps: Includes several clickable maps of Japan at different scales.
University of Texas Libraries - Japan Maps: Country, city and thematic maps from the Perry-Castañeda Library Map Collection, along with links to maps on other web sites.