O'Connor's Complete Stories won the 1972 U.S. National Book Award for Fiction and, in a 2009 online poll, was named the best book ever to have won the National Book Awards.
In June 2015, the United States Postal Service honored O'Connor with a new postage stamp, the 30th issuance in the Literary Arts series. Some criticized the stamp as failing to reflect O'Connor's character and legacy.
The Flannery O'Connor Award for Short Fiction, named in honor of O'Connor by the University of Georgia Press, is a prize given annually since 1983 to an outstanding collection of short stories.
The Flannery O'Connor Book Trail is a series of Little Free Libraries stretching between O'Connor's homes in Savannah and Milledgeville.
The Flannery O'Connor Childhood Home is a historic house museum in Savannah, Georgia, where O'Connor lived during her childhood. In addition to serving as a museum, the house hosts regular events and programs.