Betty Friedan (February 4, 1921 – February 4, 2006) was an American writer, activist, and feminist. A leading figure in the women's movement in the United States, her 1963 book The Feminine Mystique is often credited with sparking the second wave of American feminism in the 20th century. In 1966, Friedan co-founded and was elected the first president of the National Organization for Women (NOW), which aimed to bring women "into the mainstream of American society now [in] fully equal partnership with men."
Regarded as an influential author and intellectual in the United States, Friedan remained active in politics and advocacy until the late 1990s, authoring six books. As early as the 1960s Friedan was critical of polarized and extreme factions of feminism that attacked groups such as men and homemakers. One of her later books, The Second Stage (1981), critiqued what Friedan saw as the extremist excesses of some feminists.