Sarah M. Pike is an American author and professor of comparative religion in the Department of Religious studies at California State University, Chico. Her interests include paganism, environmentalism, religion and ecology, and ritual studies. Her research on neopaganism and radical environmentalism has been lauded as being significant to the study of festival and group behaviour. She is the president of the International Society for the Study of Religion, Nature, and Culture, co-chair of the American Academy of Religion, Ritual Studies Group, and director of the California State University, Chico Humanities Center.