Deep State is a British television espionage thriller series, written and created by Matthew Parkhill and Simon Maxwell, first broadcast in the United Kingdom on Fox on 5 April 2018. The first eight-part series, which began filming in May 2017, stars Mark Strong as Max Easton, a former Field Agent for MI6 who is recruited back into the field. The series co-stars Joe Dempsie, Karima McAdams, Lyne Renee, Anastasia Griffith and Alistair Petrie.

The series is produced by Endor Productions for the Fox Networks Group of Europe and Africa. As well as co-creating the series, Parkhill also serves as showrunner, executive producer and director of four of the eight episodes. The series premiered in the United States on 17 June 2018 on Epix. A second series was commissioned on 5 April 2018