Hans Cummings is the author of the World of Calliome high fantasy novels and the Zack Jackson young adult science fiction series. Two of his short stories appear in Fear the Boot's Sojourn speculative fiction anthologies.

He is also a voice over artist, having performed over a thousand narrations for Internet content creators, as well as having appeared in several audiodramas, narrated audiobooks, and currently is a cast member of I Should Roll, a Mass Effect expanded universe actual play podcast.

Hans earned a Bachelor of Arts degree in English from Indiana University in 2006. He grew up in Indiana, Germany, and Virginia and returned to Indiana when he was 21. He currently lives in Indianapolis with his wife and cat. His hobbies include tabletop and video gaming, cooking, gardening, and igniting young people's curiosity and passion for science and exploration.