Gayle S. Rubin (born January 1, 1949 in South Carolina) is an American cultural anthropologist best known as an activist and theorist of sex and gender politics. She has written on a range of subjects including feminism, sadomasochism, prostitution, pedophilia, pornography and lesbian literature, as well as anthropological studies and histories of sexual subcultures, especially focused in urban contexts. Her 1984 essay "Thinking Sex" is widely regarded as a founding text of gay and lesbian studies, sexuality studies, and queer theory. She is an associate professor of anthropology and women's studies at the University of Michigan.
In her 1984 essay "Thinking Sex", Rubin interrogated the value system that social groups—whether left or right-wing, feminist or patriarchal—attribute to sexuality which defines some behaviors as good/natural and others (such as pedophilia) as bad/unnatural. In this essay she introduced the idea of the "Charmed Circle" of sexuality, that sexuality that was privileged by society was inside of it, while all other sexually was outside of, and in opposition to it. The binaries of this "charmed circle" include couple/alone or in groups, monogamous/promiscuous, same generation/cross-generational, and bodies only/with manufactured objects. The "Charmed Circle" speaks to the idea that there is a hierarchical valuation of sex acts. In this essay, Rubin also discusses a number of ideological formations that permeate sexual views. The most important is sex negativity, in which Western cultures consider sex to be a dangerous, destructive force. If marriage, reproduction, or love are not involved, almost all sexual behavior is considered bad. Related to sex negativity is the fallacy of the misplaced scale. Rubin explains how sex acts are troubled by an excess of significance.