Nazi and Japanese World War II War Crimes Disclosure Act

Nazi and Japanese World War II War Crimes Disclosure Act - Amends the Nazi War Crimes Disclosure Act to include specified activities of: (1) the Imperial Government of Japan; (2) any government in any area occupied by Japanese military forces; (3) any government established with the assistance or cooperation of the Imperial Government of Japan; or (4) any government which was an ally of the Imperial Government of Japan.

Requires the Secretary of State to inform the Government of Japan that all Japanese war criminal records in the custody of the Government of Japan should be made fully and freely available to the U.S. Government, as requested, and to the public at large.

Authorizes the Chair of the Nazi War Criminal Records Interagency Working Group (Interagency Group) to procure temporary and intermittent services of historical specialists to aid in identifying, describing, and assessing the historical significance of Nazi war criminal records and Japanese war criminal records.

Extends the duration of the Interagency Group from three to five years.