Kathryn A. Sikkink (born 1955[1]) is an American author, human rights academic, and scholar of international relations working primarily through the theoretical strain of constructivism.

Sikkink studies international norms and institutions, transnational advocacy networks, the impact of human rights law and policies, and transitional justice.

[3] In 2012, she won the Robert F. Kennedy Book Award for her book on international human rights titled The Justice Cascade, which discusses the origins and effects of human rights trials on geopolitics and global justice.

[7] She is also the recipient of the Grawemeyer World Order Award for her book (with Margaret Keck) Activists Beyond Borders (1998).

In 2017, Sikkink released the essay Evidence for Hope: Making Human Rights Work in the 21st Century, where she states that human rights institutions have been successful in their goals, despite their flaws and limitations, and will continue to deliver in the next years.