Lord Keeper of the Privy Seal of Japan

The Lord Keeper of the Privy Seal of Japan (内大臣) was an administrative post not of Cabinet rank in the government of the Empire of Japan, responsible for being a direct, personal advisor to the emperor, and keeping the Privy Seal of Japan and State Seal of Japan among other things.

The modern office of the Lord Keeper of the Privy Seal was identical to the old Naidaijin only in name and should not be confused. The office was abolished in 1945 after World War II.

Meiji period
The modern office of the Lord Keeper of the Privy Seal was formed in 1885 after the Meiji government established the Japanese cabinet; however, the Lord Keeper of the Privy Seal was separate from the cabinet and acted as a direct, personal advisor to the Emperor. He was also responsible for the administration of imperial documents such as rescripts and edicts. Petitions to the emperor and the court were also handled by the Lord Keeper's office, as well as the responses.

In 1907, the post was expanded to become the Office of the Lord Keeper of the Privy Seal (内大臣府) with a chief secretary, three secretaries, and six assistants to handle the increased workload with the passing of the genrō.

Shōwa period
After the start of Emperor Hirohito's reign in 1925, the office and position of the Lord Keeper of the Privy Seal became increasingly important, at the expense of the office of the Prime Minister. Political infighting within the Diet of Japan further boosted the power of the Lord Keeper. The holder of this position could strictly control who was allowed to have an audience with the emperor and the flow of information.

The position and the office of the Lord Keeper of the Privy Seal were officially abolished on 24 November 1945.

Today, the seals are kept in the care of the Chamberlain of Japan.

List of officeholders
† died in office.