石井 由梨佳

Yurika Ishii is Professor, Sophia University, Faculty of Law, where she is in charge of public international law courses. Her areas of interest include general public international law, the law of the sea and international/transnational criminal law. She achieved LL.B. from the University of Tokyo, Faculty of Law (Political Science Course), LL.M. from Cornell Law School (with Rotary Ambassador Scholarship), and Ph.D from the University of Tokyo, Graduate Schools for Laws and Politics with a thesis on international regulation of economic crimes, which was published as International Regulation of Transnational Crimes (Yuhikaku, 2017; Japanese; Awarded the 51st Adachi Mineichiro Award). Her latest work includes Japanese Maritime Security and Law of the Sea (Brill, 2022; Awarded the 39th Ohira Masayoshi Memorial Award) and International Law and the Investigation of Transnational Crimes (Oxford University Press, 2025). 

She served the National Defense of Academy of Japan from 2010 to 2025 as a lecturer and an associate professor. She stayed at Max Planck Institute for Comparative Public Law and International Law (Heidelberg, Germany, 2008, 2010), Max Planck Institute for Foreign and International Criminal Law (Freiburg, Germany, 2011) and Harvard Law School (Cambridge, the United States, with Fulbright Scholarship, 2014-15) as a guest researcher.