Katherine Rundell is an English author and academic. Born on 10 July 1987, she has achieved acclaim for her captivating children's books and contributions to literature.

She is best known for her novel Impossible Creatures, which was honored as Waterstones Book of the Year for 2023. One of her earlier works, Rooftoppers, received the Waterstones Children's Book Prize and the Blue Peter Book Award for Best Story in 2015, and was also shortlisted for the Carnegie Medal.

Rundell is a Fellow of All Souls College, Oxford. Her expertise has been featured on BBC Radio 4 programmes such as Start the Week, Poetry Please, Seriously..., and Private Passions.

Among her other notable works are The Girl Savage (2011), released in the US as Cartwheeling in Thunderstorms, where it won the Boston Globe–Horn Book Award for fiction in 2015, The Wolf Wilder (2015), and The Explorer (2017), which won the children's book prize at the 2017 Costa Book Awards.

Her 2022 book, Super-Infinite: The Transformations of John Donne, won the Baillie Gifford Prize, making her the youngest ever winner of the award. In 2024, she was named author of the year at the British Book Awards.