Online Databases JAIRO – Japanese Institutional Repositories Online
Cross-search Japanese university repositories via JAIRO for genealogy-related academic papers, transcribed historical documents, and regional history research.
Online Databases
Online Databases Online Databases National Archives of Japan Digital Archive
Free online access to Japan's National Archives digitized holdings for researching ancestor honors, appointments, and official records.
Online Databases Japan Search
Japan Search cross-searches libraries, museums, archives, and more for genealogy-related historical materials.
Online Databases Unified Koseki Character Information (Ministry of Justice)
Ministry of Justice service providing a searchable database of 57,000 characters permitted in koseki. Essential for identifying archaic kanji in ancestor names.
Online Databases Historical Administrative Area Dataset Beta (Geospatial Information Authority)
Find current municipalities corresponding to abolished historical addresses. Essential for tracing koseki registered addresses that no longer exist.