Takahito, Prince Mikasa of Japan (d. 2016)
Takahito, Prince Mikasa (三笠宮崇仁親王, Mikasa-no-miya Takahito Shinnō, 2 December 1915 – 27 October 2016) was a member of the Imperial House of Japan. He was the fourth and youngest son of Emperor Taishō (Yoshihito) and Empress Teimei (Sadako) and was their last surviving child. His eldest brother was Emperor Shōwa (Hirohito). After serving as a junior cavalry officer in the Japanese Imperial Army during World War II, the prince embarked upon a post-war career as a scholar and part-time lecturer in Middle Eastern studies and Semitic languages.

With the death of his sister-in-law, Kikuko, Princess Takamatsu, on 17 December 2004, he became the oldest living member of the Imperial House of Japan. At his death at the age of 100, Prince Takahito was the oldest living royal and the oldest living prince in line of succession.