Andrew Winchester Turnbull (February 2, 1921 – January 10, 1970) was an American biographer, scholar, and essayist who wrote acclaimed biographies of novelists F. Scott Fitzgerald and Thomas Wolfe.

[1][2] Turnbull grew up in Baltimore, Maryland, and first met Fitzgerald when the author lived on his family's property in the 1930s.

[4] After contributing two essays to The New Yorker on Fitzgerald at La Paix in 1956,[2] Turnbull began work on a full-length life based on "firsthand experience, painstaking research, and extensive interviews.

After receiving a Guggenheim Fellowship in 1964, he produced another highly praised biography about Fitzgerald's acquaintance and fellow novelist Thomas Wolfe in 1968.

[2] At age 48, while a visiting professor at Brown University, he committed suicide via carbon monoxide poisoning in a closed garage at his Brattle Street home in Cambridge, Massachusetts, on January 10, 1970.