Kuniko Ozaki

, (born 1956 ) is a Japanese lawyer who served as judge of the International Criminal Court and the Presiding Judge of Trial Chamber V, constituted to try the cases against four Kenyan nationals. Specially-appointed professor of International Human Right Law at Chuo University Faculty of Law (2021-).

Early life and career Ozaki graduated from University of Tokyo in 1978 and, in 1982, was awarded an M.Phil. in International Relations at Oxford University. She was elected for a term that lasted until 11 March 2018. Until 2016, she also served as member of Trial Chamber III for the case of Jean-Pierre Bemba, the first case in which the ICC has found a high official directly responsible for the crimes of his subordinates, as well as the first to focus primarily on crimes of sexual violence committed in war.

In October 2013, Ozaki notably gave a dissenting opinion on the court's majority ruling that conditionally excused President Uhuru Kenyatta of Kenya from attending all the sittings of his trial in The Hague, criticizing the decision of going against the provisions of the Rome Statute. In a September 2014 ruling, the Chamber presided by Ozaki ordered that Kenyatta should physically appear before the court, making him the first head of state to do so.

Later career In February, 2019, Ozaki was appointed Japan's Ambassador to Estonia and accordingly requested a transfer to part-time status with the ICC. Her decision to continue hearing cases while serving ambassador was criticized as a violation of the ICC's code of ethics, which states that "udges shall not exercise any political function." On 18 April 2019 she resigned as ambassador before taking office and continued being judge in The Hague.

She is a member of the Crimes Against Humanity Initiative Advisory Council, a project of the Whitney R. Harris World Law Institute at Washington University School of Law in St. Louis to establish the world's first treaty on the prevention and punishment of crimes against humanity.