Joan V. Ruderman (born 1947/48) is an American molecular and cell biologist. She is a Professor Emeritus at Harvard University and Visiting Senior Biologist at Princeton University. She has researched cell division and embryo development, and more recently the effects of, and the public understanding of, environmental estrogens and other endocrine disruptors. She was elected as a member of the United States National Academy of Sciences in 1998.