Frederick Russell Eggan (September 12, 1906 in Seattle, Washington – May 7, 1991) was an American anthropologist best known for his innovative application of the principles of British social anthropology to the study of Native American tribes. He was the favorite student of the British social anthropologist A. R. Radcliffe-Brown during Radcliffe-Brown's years at the University of Chicago. His fieldwork was among Pueblo peoples in the southwestern U.S. Eggan later taught at Chicago himself. His students there included Sol Tax.