Official Secrets is a 2019 British drama film directed by Gavin Hood, based on the case of whistleblower Katharine Gun who exposed an illegal spying operation by American and British intelligence services to gauge sentiment of and potentially blackmail United Nations diplomats tasked to vote on a resolution regarding the 2003 invasion of Iraq. Keira Knightley stars as Gun, alongside Matt Smith, Matthew Goode, Adam Bakri, Indira Varma and Ralph Fiennes.

Gavin Hood is a South African filmmaker, and actor, best known for writing and directing Tsotsi (2005), which won the Academy Award for Best International Feature Film. He also directed the films X-Men Origins: Wolverine, Ender's Game, Eye in the Sky and Official Secrets.