Costanza Casati (born 1995) is an Italian writer. She authored the Sunday Times-bestselling novels Clytemnestra (2023), which won the Goldsboro Books Glass Bell Award, and Babylonia (2024), which won the Wilbur Smith Adventure Writing Prize.
Early life Casati was born in Fort Worth, Texas, to Italian parents. Her family returned to northern Italy when she was 2, where she grew up in Brianza near Milan. Casati attended the Liceo Zucchi in Monza. She graduated with a Bachelor of Arts (BA) in English and Film Studies from Queen Mary University of London in 2017 and a Master of Arts (MA) in Writing from the University of Warwick in 2018.
Career Casati wrote the screenplay for Erminio Perocco's documentary on the painter Tintoretto. Casati also contributed to the Canadian magazine Holr, covering the Venice Film Festival for the publication.
In 2021, Casati published her debut dystopian novel The President Show. That year, she signed her first book deal with Penguin Michael Joseph (PMJ), through which she published the Iliad-inspired novel Clytemnestra in 2023. Clytemnestra became a Sunday Times bestseller, won the Goldsboro Books Glass Bell Award, and was an American Booksellers Association Indie Next pick. It was also longlisted for the Historical Writers' Association (HWA) Debut Crown.
Casati's third fiction novel Babylonia, a work of historical fiction based on the life of Semiramis, was published in 2024. Babylonia became a Sunday Times bestseller and won the Wilbur Smith Adventure Writing Prize in the main Published Novel category.
In 2025, PMJ acquired a historical fantasy duology from Casati, starting with Mythmaker (set to be released in 2027).
Publications Novels The President Show (2021) Clytemnestra (2023) Babylonia (2024)
Screenwriting Tintoretto: Il primo regista (2019)
Short stories "Horrible Feet" (2018) in Nothing in the Rulebook "You Asked for It" (2020) in Nothing in the Rulebook
Awards +YearAwardCategoryTitleResult 2023 Historical Writers' Association (HWA) Awards Debut Crown Clytemnestra Goodreads Choice Awards Fantasy 2024 Goldsboro Books Glass Bell Award 2025 Wilbur Smith Adventure Writing Prize Published Novel Babylonia
References