John Warner (born 1970) is an American writer and editor. He is the author of four books and the editor of McSweeney's Internet Tendency. He is a frequent contributor to The Morning News and has been anthologized in May Contain Nuts,Stumbling and Raging: More Politically Inspired Fiction, and The Future Dictionary of America. He frequently collaborates with writer Kevin Guilfoile. Warner's most debut novel was The Funny Man. The book has been reviewed by Publishers Weekly and Kirkus Reviews. His most recent work is the short story collection A Tough Day for the Army edited by Michael Griffith and published by the LSU Press series, Yellow Shoe Fiction.
He previously taught at Clemson University in Clemson, SC. His focus was creative writing, and he was the director of a Humor Creative Inquiry. In this inquiry, he was working to teach students what humor is and how to create it. This three course series resulted in a student publication in 2008.