Sara Haardt (March 1, 1898 – May 31, 1935) was an American author and professor of English literature.
Though she died at the age of 37 of meningitis, she produced a considerable body of work including newspaper reviews, articles, essays, a novel The Making of a Lady, several screenplays and over 50 short stories.
She is central to John Barton Wolgamot's notorious book-length poem, "In Sara Mencken, Christ and Beethoven there were men and women" (1944), recorded by the composer Robert Ashley.