Ada Calhoun (born Ada Calhoun Schjeldahl; March 17, 1976) is an American nonfiction writer. She is the author of St. Marks Is Dead, a history of St. Mark's Place in East Village, Manhattan, New York; Wedding Toasts I’ll Never Give, a book of essays about marriage; Why We Can't Sleep, a book about Generation X women and their struggles, and Also a Poet, a memoir about her father and the poet Frank O’Hara. She has also been a critic, frequently contributing to The New York Times Book Review; a co-author and ghostwriter, the New York Times having reported that she collaborated on the 2023 Britney Spears memoir The Woman in Me; and a freelance essayist and reporter. A Village Voice profile in 2015 said: "Her CV can seem as though it were cobbled together from the résumés of three ambitious journalists." Source: Wikipedia (en)