1420s in Japan

emperor of Japan

was a after Ōei and before Eikyō, from April 1428 until September 1429. The reigning emperors were and .

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 Meitoku and before Shōchō. This period spanned the years from July 1394 through April 1428. Reigning emperors were and .

Military conflict