Alyssa T. Yamamoto is the senior legal and policy advisor at the Strategic Litigation Project at the Atlantic Council. The Strategic Litigation Project works on prevention and accountability efforts for atrocity crimes, human rights violations, terrorism, and corruption offenses around the world.

Yamamoto is a human rights lawyer who previously served as legal advisor to the United Nations (UN) special rapporteur on the promotion and protection of human rights while countering terrorism. Her work focused on advising UN Member States on human rights and gender mainstreaming in counterterrorism and national security, and advocating for independent oversight and accountability for the systematic abuse of counterterrorism measures to target human rights defenders, civil society actors, and minority groups. Yamamoto also worked at an international law firm, where she specialized in public international law and international arbitration. Her representations involved litigation before the International Court of Justice and US courts, including under the US Alien Tort Statute, Torture Victim Protection Act, and International Organizations Immunities Act, and communications before the UN human rights treaty bodies and special procedures. Prior to law school, she worked in international development and global health, including as a researcher and engagement manager for the nonprofits Partners In Health and Village Health Works, respectively. 

Yamamoto received a JD from Yale Law School and AB from Harvard College. She was a visiting fellow at the Human Rights Center at University of Minnesota Law School; the Centre on Conflict, Development and Peacebuilding at the Graduate Institute of International and Development Studies; and the Geneva Academy of International Humanitarian Law and Human Rights. She has published on, among other issues, state responsibility and modes of liability under international law.