The Prevention of Corruption Act 1906 (6 Edw.7 c.34) was an Act of the Parliament of the United Kingdom of Great Britain and Ireland (as it was then). It was the second of three pieces of legislation regarding corruption which after 1916 were collectively referred to as the Prevention of Corruption Acts 1889 to 1916. It was repealed by the Bribery Act 2010. Section 1 made it an offence (formerly classified as a misdemeanour) subject to imprisonment up to 7 years: The 2017-19 prosecutions of Peter Chapman, and of Alstom and its company officers for conspiracy to corrupt in Lithuania may have been the last prosecutions for this offence.

Agent and principal

An "agent" includes any person employed by or acting for another, and a "principal" includes an employer. The "principal" is the person the agent is employed by or acting for. Anyone working for the government counts as an agent. A prosecution in England and Wales for an offence under this Act could not be instituted without the consent of the Attorney-General, who could discontinue an investigation that was working towards a prosecution under the Act.