Kirsten Miller is an American novelist renowned for creating the Kiki Strike book series. Her first book in the series, Kiki Strike: Inside the Shadow City, was published in 2006, followed by The Empress's Tomb in October 2007. The series narrates the adventures of Kiki Strike, Ananka Fishbein, and their friends in New York City. The inspiration for the series came when the front lawn of a Manhattan nursing home collapsed, revealing an underground room, leading Kirsten to explore the tunnels and rooms beneath the city.

Alongside the Kiki Strike series, Kirsten has authored The Eternal Ones, released on August 10, 2010. Additionally, she co-authored a three-book children's series with Jason Segel named Nightmares!, with the first book released in the fall of 2014.

Her latest novel, Lula Dean's Little Library of Banned Books, is a humorous take on controversial issues, while her first adult novel, The Change, was selected for the Good Morning America Book Club in May 2022. Kirsten has published numerous middle grade and YA novels, including the acclaimed Kiki Strike books and How to Lead a Life of Crime. She grew up in a small town in the mountains of North Carolina and moved to New York City for college, where she continues to reside and work.