The Informer is a British crime drama series broadcast on ITV from August 1966 to December 1967. Created by John Whitney and Geoffrey Bellman, it stars Ian Hendry as former barrister Alex Lambert, disgraced and disbarred, who has to rebuild his life. He utilises his former contacts on both sides of the law to become a paid informer. Living well from the rewards paid by insurance companies, Lambert still has to hide his activities from both his wife and others behind a new persona in the guise as a business consultant.

Two seasons were produced, totalling 21 episodes. Only two episodes are known to exist, the remainder presumably wiped.