J. Baird Callicott (born 1941) is an American philosopher whose work has been at the forefront of the new field of environmental philosophy and ethics. He is a University Distinguished Research Professor and a member of the Department of Philosophy and Religion Studies and the Institute of Applied Sciences at the University of North Texas. Callicott held the position of Professor of Philosophy and Natural Resources at the University of Wisconsin–Stevens Point from 1969 to 1995, where he taught the world's first course in environmental ethics in 1971. From 1994 to 2000, he served as Vice President then President of the International Society for Environmental Ethics. Other distinguished positions include visiting professor of philosophy at Yale University; the University of California, Santa Barbara; the University of Hawai’i; and the University of Florida.