Profile Information
- Affiliation
- Professor, Faculty of Law Department of International Legal Studies, Sophia University
- Degree
- Ph.D(Feb, 2011, The University of Tokyo)LL.M(May, 2004, Cornell Law School)
- Contact information
- eureka
sophia.ac.jp - Researcher number
- 80582890
- ORCID ID
https://orcid.org/0000-0001-5846-8341- J-GLOBAL ID
- 200901008400423457
- researchmap Member ID
- 6000015408
- External link
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.
Research Interests
11Research Areas
2Research History
11-
Sep, 2020 - Mar, 2023
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Sep, 2018 - Mar, 2019
Education
3-
Apr, 2003 - Mar, 2009
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Aug, 2003 - May, 2004
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Apr, 1999 - Mar, 2003
Committee Memberships
43-
Nov, 2024 - Present
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Sep, 2024 - Present
Awards
4Papers
56-
Akio Morita, Koji Toraya, Osamu Yoshida, Naoki Iwatsuki, Theory and Realization of International Law: Essays in Honor of Professor Yuji Iwasawa's 70th Birthday, 627-646, Oct 30, 2025 Invited
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Topology of Space Law, 93-112, Feb 28, 2025 Invited
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State, Ocean and International Law: Essays in Honour of Judge Shunji Yanai&s 88th Birthday, Vol. 2, 311-328, Feb 28, 2025 Invited
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Japanese Yearbook of International Law, 67 26-56, Feb 17, 2025 Peer-reviewedInvited
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International Affairs, 722 50-63, Dec 13, 2024 Invited
Misc.
59-
Asian Journal of International Law, 1-2, Jul 28, 2025
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Japan Transport and Tourism Research Institute, Study group on legal issues relating to intercontinental transport projects by ballistic flights and others, 23-30, Mar 31, 2025 Invited
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Kazuhiro Nakatani = Takayoshi Sugawara, Air Law (Shinzansha), 44-59, Mar 31, 2025 Invited
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Asia Pacific Bulletin, 726, Feb 20, 2025 Peer-reviewedInvited
Major Books and Other Publications
8-
Oxford University Press, Oct 8, 2025 (ISBN: 9780198957058) Refereed
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Nov 30, 2024 (ISBN: 9784589043733)
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Presentations
129-
Protecting Maritime Security and Stability in the Indo-Pacific: Challenges for the United States and Japan, Mar 5, 2025, Wilson Center Invited
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10th National Space Policy Secretariat Symposium on Ensuring the Safe and Sustainable Use of Outer Space, Feb 25, 2025, National Space Policy Secretariat Invited
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The 16th Space Law Symposium, Jan 31, 2025, 慶應義塾大学 Invited
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Digital Forensic Community 2024, Dec 9, 2024, The Institute of Digital Forensics Invited
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Second Bilateral Dialogue on International Law: Japan and Korea: UNCLOS at 30: Issues and Prospects, Nov 1, 2024, SLOC Study Group-Korea, Waseda University Invited
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Seijo University, Graduate School of Legal Studies, Oct 28, 2024, Seijo University, Graduate School of Legal Studies Invited
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Philippine International Law of the Sea Academy, Jul 19, 2024, Philippine International Law of the Sea Academy Invited
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6th Summit for Space Sustainability, Jul 11, 2024, The Secure World Foundation and Cabinet Office, Space Policy Secretariat, Government of Japan.
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A Rules-Based International Order: Benefits and Challenges, Mar 18, 2024, British Institute of International and Comparative Law Invited
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THE 12th OCEAN DIALOGUE: “ENDURING MARITIME CONNECTIVITY IN A FRAGMENTING WORLD,”, Mar 15, 2024, Diplomatic Academy of Vietnam & Konrad Adenauer Stiftung Invited
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Challenges against the Liberal International Order concerning Territory and Sovereignty, Mar 6, 2024 Invited
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The 15th Space Law Symposium Symposium, Feb 24, 2024, Keio University Invited
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Sakudaira Security Forum Roundtable Session, Feb 6, 2024, The University of Tokyo, ROLES Invited
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The Necessity of Maintaining an International Law-based Order in the East and South China Sea, Jan 15, 2024, Mitsubishi UFJ Research & Consulting Co., Ltd and the Diplomatic Academy of Viet Nam Invited
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The Information Network Law Association JAPAN, the 23rd Annual Conference, Dec 10, 2023, The Information Network Law Association JAPAN Invited
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The EU-Japan Strategic Communications Practitioners’ Seminar “Towards a Principled;Inclusive Indo-Pacific”, Oct 31, 2023, The University of Tokyo, Strategic Communications Education Research Unit (SCERU) Invited
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NYCU Law Faculty Workshop on Data Security and Government, Oct 18, 2023 Invited
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ACAMS The Assembly Japan, Sep 20, 2023, ACAMS Japan Invited
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YCAPS-SPF Community Conversation, Jul 18, 2023, The Yokosuka Council on Asia-Pacific Studies (YCAPS) -Sasakawa Peace Foundation (SPF) Invited
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The Japanese Council of International Trade, Jul 15, 2023, The Japanese Council of International Trade Invited
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Platform Economy and Sustainable Society 1, Jun 20, 2023, Keio University Invited
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The 101st Conference, Criminal Law Society of Japan, Jun 4, 2023, Criminal Law Society of Japan Invited
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Conference on Challenges in Addressing Potential Threats to the Security of Commercial Shipping in South-East Asia, May 30, 2023, National University of Singapore, Centre for International Law Invited
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Technology and AML/CFT Framework Transformation, May 17, 2023, ACAMS Invited
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Course on International Maritime Security Law, May 3, 2023, International Maritime Security Law Invited
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Japan Association of Disarmament Studies, Annual Conference, Apr 15, 2023, Japan Association of Disarmament Studies Invited
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American Society of International Law, Annual Meeting, Mar 30, 2023, American Society of International Law Invited
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Ministry of Foreign Affairs, Japan, Young Diplomats Invitation Program 2023, Mar 22, 2023, Ministry of Foreign Affairs, Japan Invited
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Lessons from Ukraine for Maritime East Asia, Feb 15, 2023, Stimson Center Invited
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The 14th Symposium of Space Law: Risk Management for Sustainable Space Activities, Feb 9, 2023, Keio University Invited
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Workshop on 21st Century Naval Warfare and International Humanitarian Law, Dec 8, 2022, Rashtriya Raksha University, International Committee of the Red Cross Invited
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MAVs and International Maritime Security Law, Nov 4, 2022 Invited
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East Asia Strategy Forum 2022, Nov 2, 2022, The Institute for Peace and Diplomacy, Asia-Pacific Foundation Invited
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Greek-Cypriot and Japanese Perspectives on the Law of the, Oct 29, 2022, Neapolis University Invited
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JSPS Workshop, Oct 27, 2022 Invited
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International Seminar for Bar Associations: International Responses to Ukraine Crisis, Oct 11, 2022
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GLOBAL FACULTY FORUM: INDO-PACIFIC STRATEGIES AND INTERNATIONAL LAW, Sep 30, 2022, Singapore Management University Yong Pung How School of Law Invited
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Reshaping the South China Sea Order amidst the Changing Indo-Pacific Dynamics, Sep 28, 2022, National Taiwan University Invited
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Japanese Society of International Las, Annual Conference, 2022, Sep 6, 2022, Japanese Society of International Law Invited
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GNLU-Indian Navy Short duration Course 2022 on Law of the Sea and Maritime Law (Including Naval Ops), Jun 8, 2022, Gujarat National Law University Invited
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Keio University, Platform Economy and Sustainable Society, Jun 7, 2022 Invited
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The 4th Annual Alexander C. Cushing International Law Conference: "International Law: Conflict at Sea", May 16, 2022, Naval War College Invited
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International Maritime Law Institute, Course On International Maritime Security Law, May 10, 2022, International Maritime Law Institute Invited
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Indo-Pacific Maritime Hour, Mar 30, 2022, Yokosuka Council on Asia Pacific Studies Invited
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Information Sharing for Tracking and Confiscating Criminal Profits and The Protection of the PrivacyWorkshop Series: Challenges and The Future of the Criminal Policies, Mar 24, 2022
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45th Annual Conference on Oceans Law & Policy, Mar 18, 2022, Maritime Institute of Malaysia & Naval War College Invited
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International Mediterranean Sea to Japan Sea: Maritime Issues - Industrialization and Marine Resources, Mar 10, 2022, Ankara University, Asia-Pacific Research Center Invited
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Keio Universeity Space Law Center, The 13th Space Law Symposium, Feb 28, 2022 Invited
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Liberal Script(s) - Asian Version and Contestations of Concepts, Feb 23, 2022, The Cluster of Excellence “Contestations of the Liberal Script (SCRIPTS)” Invited
Teaching Experience
8-
Apr, 2025 - PresentInternational Law (Sophia University)
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Sep, 2025 - Mar, 2026Law of International Dispute Settlement (Sophia University)
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Sep, 2012 - Mar, 2025Public International Law (National Defense Academy of Japan)
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Apr, 2010 - Mar, 2025International Relations (National Defense Academy of Japan)
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Apr, 2010 - Mar, 2024Law of the Sea (National Defense Academy of Japan)
Professional Memberships
11-
May, 2019 - Present
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Nov, 2018 - Present
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Jan, 2017 - Present
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Nov, 2016 - Present
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May, 2016 - Present
Research Projects
29-
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2024 - Mar, 2028
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2025 - Mar, 2028
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2023 - Mar, 2028
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Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Pioneering), Japan Society for the Promotion of Science, Jun, 2022 - Mar, 2027
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Jun, 2020 - Mar, 2025
Academic Activities
7-
Planning/Implementing academic research, Peer reviewUnited Nations Office on Drugs and Crime (Tokyo), Apr 5, 2024 - Apr 7, 2024
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Planning/Implementing academic research, Peer reviewUnited Nations Office on Drugs and Crime, Global Maritime Crime Programme, Jan 12, 2023 - Jan 14, 2023
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Peer review, OthersInternational Institute of Humanitarian Law (Online), Dec 16, 2020 - Dec 18, 2020
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Peer review, OthersUnited Nations Office on Drugs and Crime, Global Maritime Crime Programme (Mauritius), Oct 16, 2019 - Oct 18, 2019
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International Institute of Humanitarian Law (Copenhagen, Denmark), Sep 30, 2019 - Oct 4, 2019
Social Activities
37Other
2-
Jun, 2021 - Jun, 2021Participated in Summer Academy for Global Privacy Law 2021 - International data flows: Moving challenges, new solutions? (https://www.vub.be/en/events/2021/summer-academy-for-global-privacy-law-2021-international-data-flows-moving-challenges).
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Jun, 2017 - Jun, 2017Participated in Maritime Boundaries Workshop held by the Centre for International Law (CIL), National University of Singapore and the Australian National Centre for Ocean Resources and Security (ANCORS), University of Wollongong in Singapore from 6-8 June 2017 (https://cil.nus.edu.sg/programmes-and-activities/upcoming-events/cil-ancors-maritime-boundary-workshop/).
