Joan Didion (born December 5, 1934) is an American writer, known as a journalist, playwright, essayist, and novelist. Didion contributes regularly to The New York Review of Books and The New Yorker. With her late husband, writer John Gregory Dunne, she collaborated on several screenplays. She lives in New York City.

Didion was born in Sacramento, California and graduated from the University of California at Berkeley in 1956 with a BA in English. Much of Didion's writing draws from her life in California, particularly during the 1960s as the world in which she grew up "began to seem remote." Her portrayals of conspiracy theorists, paranoiacs, and sociopaths (including Charles Manson) are now considered part of the canon of American literature.

Didion is the author of five novels, including Run River and Play It As It Lays (1970), and eight books of non-fiction. Her collections of essays, Slouching Towards Bethlehem (1968) and The White Album (1979) -- a book described in one review as helping to define California as "the paranoia capital of the world" -- made her famous as an observer of American politics and culture with a distinctive style of reporting that mixed personal reflection and social analysis. This led her to be associated with members of the New Journalism such as Tom Wolfe and Hunter S. Thompson, though Didion's ties to that movement have never been considered particularly strong.

In 2001 Didion published Political Fictions, a collection of essays which had first appeared in the New York Review of Books. Issues and personalities covered in the essays included The Religious Right, Newt Gingrich, and the Reagan administration.

Where I Was From (2003), a memoir, exegeses on California mythologies, and on the author's relationship to her birthplace and to her mother. Indirectly, it also serves as a rumination on the American frontier myth and the culture that we see today in California as a direct consequence of a population of survivalists who made it "through the Sierra," finally posing the question "at what cost progress?"

Didion's latest book, The Year of Magical Thinking, was published October 4, 2005. The book-length essay chronicles the year following her husband's death, during which Didion's daughter, Quintana, was also gravely ill. The book is both a vivid personal account of losing a partner after 40 years of professional collaboration and marriage, and a broader attempt to describe the mechanism that governs grief and mourning. In November 2005, it won the National Book Award for nonfiction.

Although during the period of the book their daughter seemed to recover, she died of complications from acute pancreatitis on August 26, 2005, in New York City at age 39 after an extended period of illness. The New York Times reported that Didion would not change the book to reflect her daughter's death. "It's finished," she said.

Fiction

• Run River (1963)
• Play It as It Lays (1970)
• A Book of Common Prayer (1977)
• Democracy (1984)
• The Last Thing He Wanted (1996)

Non-fiction

• Slouching Towards Bethlehem (1968)
• The White Album (1979)
• Salvador (1983)
• Miami (1987)
• After Henry (1992)
• Political Fictions (2001)
• Where I Was From (Knopf, 2003)
• The Year of Magical Thinking (Knopf, 2005)