Brady Udall grew up in a large Mormon family in Arizona, where he worked on his grandfather's farm. He graduated from Brigham Young University and later attended the Iowa Writers' Workshop.
He was formerly a faculty member of Franklin & Marshall College starting in 1998, then Southern Illinois University, and now teaches writing at Boise State University.
A collection of his short stories titled Letting Loose the Hounds was published in 1998 and his debut novel The Miracle Life of Edgar Mint was published in 2001. The Lonely Polygamist was published in May 2010.