Hiroshi Kōjina is a Japanese animator, character designer, and anime director. His directorial works include Grenadier, Majin Tantei Nōgami Neuro, Kiba, Rainbow- Nisha Rokubō no Shichinin and the 2011 anime adaptation of Hunter × Hunter. He is a member of the Japanese Animation Creators Association. He joined Studio Live in 1982, and following the death of Toyoo Ashida, became the head of the company in 2011.