Tiffany Reisz is a USA Today-bestselling American author renowned for the Original Sinners series of erotica. Her work, published by Harlequin imprint Mira Books, has been described as "smart smut" by NPR and as "Fifty Shades for adults" by Salon due to its witty depictions of sex and its heavy use of religious imagery and themes.

Reisz has been recognized for her diverse characters, with USA Today praising her contributions in 2014. She has won the RITA Award and a Lambda Literary Award. Born in Owensboro, Kentucky, she graduated from Centre College with a B.A. in English and began her writing career as a student at Asbury Theological Seminary in Wilmore, Kentucky. She lives in Louisville, Kentucky, with her husband, novelist Andrew Shaffer, and their two cats.

In addition to the Original Sinners, she writes mainstream women's suspense fiction, including The Bourbon Thief and The Night Mark. Her erotic fantasy The Red was named an NPR Best Book of the Year. Her latest novel, The Pearl, and the expanded 10th Anniversary edition of the gothic romance The Headmaster are her recent works.