Da Vinci's Demons is a historical fantasy drama television series that presents a fictional account of Leonardo da Vinci's early life. The series was conceived by David S. Goyer and stars Tom Riley in the title role. It was developed and produced in collaboration with BBC Worldwide and was shot in Wales. The series has been distributed to over 120 countries.

The show follows Leonardo as he is implicated in the political schemes of the Medici and Pazzi families and their contrasting relationships with the Catholic Church. These events occur alongside Leonardo's quest to obtain a mystical text called the Book of Leaves, which leads him to become entangled with a cult known as the Sons of Mithras.

The series premiered in the United States on Starz on 12 April 2013, and its second season premiered on 22 March 2014. The series was renewed for a third season, which premiered on 24 October 2015. On 23 July 2015, Starz announced that the third season would be the show's last. However, Goyer has left it open for a miniseries return.