Hans Zinsser (November 17, 1878 – September 4, 1940) was an American physician, bacteriologist, and prolific author.
The author of over 200 books and medical articles, he was also a published poet. Some of his verses were published in ''The Atlantic Monthly''.
His 1940 publication, ''As I Remember Him: the Biography of R.S.'', won one of the early National Book Awards, the sixth and last annual award for Nonfiction voted by members of the American Booksellers Association.