The Investigatory Powers Tribunal (IPT) is a first-instance tribunal and superior court of record in the United Kingdom. It is primarily an inquisitorial court.

It hears complaints about surveillance by public bodies, primarily the intelligence services. It does not hear complaints about surveillance by private bodies.

It is a part of the Home Office but operates independently. It is also separate from the administration of the rest of the UK tribunals system.

The IPT was established by the Regulation of Investigatory Powers Act 2000 (RIPA 2000), replacing the Interception of Communications Tribunal, the Security Service Tribunal, and the Intelligence Services Tribunal.

Its powers were amended by the Investigatory Powers Act 2016 (IPA 2016) to, among other things, introduce appeals to higher courts.

The IPT is a UK-wide tribunal. This means it operates in all three legal jurisdictions within the UK, taking into account the differences in law between them.

The IPT considers complaints about the conduct any organisation with powers under RIPA, particularly with regards to surveillance. These include:

Section 65 of the RIPA 2000 empowers the IPT to consider proceedings under the Human Rights Act 1998, to enforce Article 13 of the European Convention on Human Rights.