Catharine Drew Gilpin Faust (born September 18, 1947) is an American historian and author who served as the 28th president of Harvard University from 2007 to 2018. She was Harvard's first female president, its first president since 1672 without a Harvard undergraduate or graduate degree, and the first to have been raised in the South. Faust was also the founding dean of the Radcliffe Institute for Advanced Study. She was repeatedly named one of the world's 100 most powerful women by Forbes, reaching as high as 33rd in 2014.

Drew Gilpin was born in New York City and raised in Clarke County, Virginia, in the Shenandoah Valley. She is the daughter of Catharine Ginna (née Mellick) and McGhee Tyson Gilpin. Her father was a Princeton graduate and bred thoroughbred horses, among other business ventures. Her paternal grandfather, Kenneth Newcomer Gilpin, was a businessman who served in the Virginia House of Delegates (representing Clarke and adjacent Warren Counties) and was an aviator in both World War I and World War II. Her paternal great-grandfather, General Lawrence Tyson, was a U.S. senator from Tennessee during the 1920s. Faust also has New England ancestry and is a descendant of Jonathan Edwards, the third president of Princeton.

Faust went to New England to attend Concord Academy in Concord, Massachusetts, from which she graduated in 1964. She then earned a B.A., magna cum laude, with honors in history from Bryn Mawr College in 1968. Three years later, she received an M.A. in American civilization from the University of Pennsylvania. She remained there to complete her Ph.D. in 1975, writing a thesis entitled A Sacred Circle: The Social Role of the Intellectual in the Old South, 1840–1860, published in 1977 as A Sacred Circle: The Dilemma of the Intellectual in the Old South, 1840–1860.

In 1975, Faust joined the University of Pennsylvania faculty as assistant professor of American civilization. Her area of specialty was the history of the South during the antebellum period and the Civil War. She rose to become Walter Annenberg Professor of History.

After publishing her thesis in book form as A Sacred Circle: Dilemma of the Intellectual in the Old South, 1840-1860 (1977), she authored a series of non-fiction books on U.S. history. Among them was James Henry Hammond and the Old South (1982), a biography of James Henry Hammond, Governor of South Carolina from 1842 to 1844. She followed that with Mothers of Invention: Women of the Slaveholding South in the American Civil War (1996), for which she won the Society of American Historians Francis Parkman Prize and the Avery O. Craven Award from the Organization of American Historians in 1997. Her book This Republic of Suffering (2008) was a critically acclaimed exploration of how Americans' understanding of death was shaped by the high casualties during the Civil War. It was a finalist for the Pulitzer Prize and National Book Award.

In 2001, Faust was appointed the first dean of the Radcliffe Institute for Advanced Study, which was established after the merger of Radcliffe College with Harvard University. On February 8, 2007, she was selected as the next president of Harvard. Following approval by the University's governing boards, her appointment was made official three days later. Faust was the first woman to serve as president of Harvard University. She succeeded Lawrence Summers, who had resigned on June 30, 2006, after a series of controversial statements that led to mounting criticism from members of Harvard Faculty of Arts and Sciences. Derek Bok, who served as Harvard president from 1971 to 1991, returned in the role of interim president during the 2006–2007 academic year.

At a campus press conference, Faust said, "I hope that my own appointment can be one symbol of an opening of opportunities that would have been inconceivable even a generation ago." She added, "I'm not the woman president of Harvard, I'm the president of Harvard." In her installation address on October 12, 2007, she said:

A university is not about results in the next quarter; it is not even about who a student has become by graduation. It is about learning that molds a lifetime, learning that transmits the heritage of millennia; learning that shapes the future.