1440s in Japan

emperor of Japan

The eighth shōgun of the Ashikaga shogunate of Japan (1436–1490)

The seventh shogun of the Ashikaga shogunate of Japan (1434-1443)

daimyo

was a after Kakitsu and before Hotoku. This period spanned the years from February 1444 through July 1449. The reigning emperor was .

was a after Eikyō and before ''Bun'an''. This period spanned the years from February 1441 through February 1444. The reigning emperor was .

was a after Shōchō and before Kakitsu. This period spanned the years from September 1429 through February 1441. The reigning emperor was .

was a after ''Bun'an and before Kyōtoku.'' This period spanned the years from July 1449 through July 1452. The reigning emperor was .

treaty signed in 1443 between the Joseon dynasty and Sō Sadamori as a means of controlling Japanese piracy and legitimizing trade between Tsushima island and three Korean ports