Collateral is a four-part British television drama serial, written and created by David Hare, and directed by S. J. Clarkson. It first broadcast on BBC Two on 12 February 2018.

The series, described by Hare as "a police procedural without any of that police attitudinising", stars Carey Mulligan as Kip Glaspie, a detective inspector assigned to investigate the murder of a pizza delivery driver who is gunned down in a London suburb. The ensuing story explores a complex web of characters who are all somehow connected with the story. Nathaniel Martello-White stars as Glaspie's partner, detective sergeant Nathan Bilk. Jeany Spark, Nicola Walker, John Simm and Billie Piper are also credited as principal members of the cast.

The series was announced in April 2017, and was Hare's first original series for television, despite having written for the BBC since 1973. Piers Wenger, the BBC's head of drama, described the series as “a contemporary and thought-provoking state-of-the-nation thriller that pushes the boundaries of what audiences expect.”

The series was co-produced by Netflix, and was released on the service internationally in March 2018. A DVD release of the series via Dazzler Media was released on 26 March 2018.