Life and Adventures of Jack Engle: An Auto-Biography: A Story of New York at the Present Time in Which the Reader Will Find Some Familiar Characters is a city mystery novel by Walt Whitman.

It was first published anonymously in 1852 as a serial in a newspaper before being rediscovered in 2017, when it was reprinted in journal article and book form.

Life and Adventures of Jack Engle was first published anonymously in serial form in the New York Sunday Dispatch newspaper from March 14 to April 18, 1852.

[3][4] After its rediscovery, Jennifer Schuessler in The New York Times called the work a "quasi-Dickensian tale" with "more than a few unlikely plot twists and jarring narrative shifts".

[7] There is yet little literary scholarship on the novel; the first two critical essays to deal with the novel—authored by Stefan Schöberlein and Stephanie M. Blalock,[8] and Scott T. Zukowski[9]—appeared in the Walt Whitman Quarterly Review in 2020.