Hajime Tsuburaya (円谷 一 Tsuburaya Hajime) was a director on the Ultraman Series. He was the first son of Eiji Tsuburaya and father of Hiroshi Tsuburaya. He took over Tsuburaya Productions after Eiji passed away in 1970. His main stage name was "Kyoichi Azuma" which he used to credit himself when writing lyrics for the Ultraman Series.
Hajime Tsuburaya died in February 9, 1973, after suffering a cerebral hemorrhage just after waking up. He suddenly collapsed and was delivered to a hospital but died soon afterward. He was 41 years old at that time. It had been only three years since his father's death.
- In Ultraman Tiga episode 49, "The Ultra Star," which was created as a commemorative episode for him and his father, the role of himself is portrayed by his son, Hiroshi Tsuburaya.