Judith Pamela Butler (born February 24, 1956) is an American philosopher and gender theorist whose work has influenced political philosophy, ethics, and the fields of third-wave feminism, queer theory, and literary theory. In 1993, Butler began teaching at the University of California, Berkeley, where they have served, beginning in 1998, as the Maxine Elliot Professor in the Department of Comparative Literature and the Program of Critical Theory. They are also the Hannah Arendt Chair at the European Graduate School.