Andrew J. Porter is an American short story writer.

Currently, Porter lives in San Antonio, Texas, where he is Professor of English at Trinity University and Director of the Creative Writing Program.

His debut short story collection, The Theory of Light and Matter, won the 2007 Flannery O'Connor Award for Short Fiction and was republished in 2010 by Vintage Books/Random House.

He is also the author of the novel In Between Days (Alfred A. Knopf, 2012), which was selected for the Barnes & Noble "Discover Great New Writers" series, and the short story collection The Disappeared (Alfred A. Knopf), which was published in 2023 and long listed for The Story Prize.

Foreign editions and translations of The Theory of Light and Matter, In Between Days, and The Disappeared have been published in France, The Netherlands, Korea, Bulgaria, Argentina, Australia and The United Kingdom.