The major - called Human Developmental and Regenerative Biology - also will include classes on human disease, experimental and human genetics and aging.
Harvard's Faculty of Arts and Sciences approved the major Tuesday.
Bill Anderson, a lecturer in stem cell and regenerative biology, says the major will allow students "to study biological processes through the lens of developing humans." He said stems cells would be a component of that.
Harvard has been one of the leaders in stem cell research, raising private funds to support the work.