Agnes Callard[2] (née Gellen;[3] born 1976) is an American philosopher[4] and an associate professor of philosophy at the University of Chicago.

[7] Her mother, Judit Gellen, was a hematologist and oncologist in the 1980s, specializing in the treatment of AIDS; she also worked as a prison doctor at Riker's Island.

[7] Callard's father studied law in Hungary but became a carpet salesman in the US and retired as a steel exporter.

[9] With L. A. Paul, Callard received the 2020 Lebowitz Prize, awarded by the American Philosophical Association and Phi Beta Kappa.

[11] Callard has published in the Boston Review,[12] The New Yorker,[13] and The New York Times,[14] and has written a column on public philosophy for The Point magazine.

[18] In 2017, she created the Night Owls public debate series in Hyde Park, Chicago, featuring guests such as Tyler Cowen, Chris Blattman, Ezra Klein, and Hollis Robbins,[19] and in November 2018 participated in one with her ex-husband and colleague Ben Callard, on the philosophy of divorce.