David Hajdu (born 1955) is an American columnist, author and professor at Columbia University Graduate School of Journalism. He is the music critic for The New Republic.
His biographical work includes Lush Life: A Biography of Billy Strayhorn, and Positively 4th Street: The Lives and Times of Joan Baez, Bob Dylan, Mimi Baez Farina and Richard Farina, which won the ASCAP-Deems Taylor Award, and was a finalist for the National Book Critics Circle Award, and the Firecracker Book Award.
His nonfiction work includes The Ten-Cent Plague: The Great Comic-Book Scare and How It Changed America