Diana Eck is Professor of Comparative Religion and Indian Studies; Fredric Wertham Professor of Law and Psychiatry in Society in the Faculty of Arts and Sciences; and Member of the Faculty of Divinity at Harvard University. Eck’s work in the U.S. focuses especially on the challenges of religious pluralism in a multi-religious society.

Since 1991, she has headed the Harvard Pluralism Project, which explores and interprets religious dimensions of America's new immigration; the growth of Hindu, Buddhist, Sikh, Jain, and Zoroastrian communities in the United States; and the new issues of religious pluralism and American civil society.

The Pluralism Project's award-winning On Common Ground: World Religions in America, was published in 1997; her book A New Religious America: How a "Christian Country" Has Become the World's Most Religiously Diverse Nation was published in 2001. Her book Encountering God: A Spiritual Journey From Bozeman to Banaras is in the area of Christian theology and interfaith dialogue. It won the Grawemeyer Book Award in 1995, and a 10th-anniversary edition was published in 2003.