Shinya Koshika (小鹿 信也, Koshika Shinya; born April 28, 1942), known by his ring name Great Kojika (グレート小鹿, Gurēto Kojika), is a Japanese professional wrestler. He co-founded the promotion Big Japan Pro Wrestling (BJW). Kojika is the oldest active Japanese wrestler as well as the one with the longest career, having debuted in 1963. He is also the oldest active wrestler in the world.
Source: “Great Kojika”, English Wikipedia (CC BY-SA 4.0), excerpt