Portal:Japan/Anniversaries/December/December 31

December 31:

Births
 * 1572 - Emperor Go-Yōzei (d. 1617)
 * 1714 - Arima Yoriyuki (d. 1783), mathematician and educator
 * 1963 - Konishiki Yasokichi, American-Japanese sumo wrestler
 * 1974 - Ryan Sakoda, Japanese-American wrestler
 * 1979 - Noriko Nakagoshi, actress

Deaths
 * 1568 – Shimazu Tadayoshi (b. 1493), daimyo