The Informer is a 1929 British part-talkie drama film directed by Arthur Robison and starring Lya De Putti, Lars Hanson, Warwick Ward and Carl Harbord. The picture was based on the 1925 novel The Informer by Liam O'Flaherty. In the film, a man betrays his best friend, a member of the outlawed Irish Republican Army, to the authorities and is then pursued by the other members of the organisation. The later better-known adaptation The Informer (1935) was directed by John Ford.