Investigations Police of Chile (Spanish: Policía de Investigaciones de Chile, PDI) are the civilian investigative police force of Chile. Founded in 1933, it is one of two Chilean police bodies, along with the Carabineros de Chile. The PDI is the principal law enforcement arm of the Public Prosecutor's Office of Chile in criminal investigation.

The first reference to police work in Chile is in the Police Regulation of 1803, where the terms "high police" and "public security" are used. Then, in 1830, the Vigilantes and Serenos Corps of Santiago were created, whose work was followed throughout the country. In 1852 the Brigada de Policía was created in Santiago, where the Vigilantes and Serenos Corps were merged.

In the 1870s, the mayor of the city of Santiago, Benjamín Vicuña Mackenna proposed modelling the Brigada de Policía on the Agent de la Sûrete in Paris, France, which was based on the administrative structure of the police force. Ranks of Inspector, Comisario, and Prefecto (based on the French ranks of Inspecteur, Commissaire, and Préfet) were implemented, and that are still used today.

The modern Investigations Police was established in 1933 as a separate organization of civil police, independent from the control of the militarized Carabineros de Chile.

In March 2011, fence and arms dealer Italo Nolli shot and killed PDI detectives Marcelo Morales and Kiram Gallardo, the latter of which thus became the first female PDI member killed in the line of duty.

The Investigative Police divides its investigation areas according to the crime investigated, counting with it several specialized units of police investigation, which have Detectives specialists, experts and experts in the respective areas.

(Jefatura Nacional de delitos contra los Derechos Humanos y las Personas, JENADEP)

(Jefatura Nacional de Extranjería y Policía Internacional, JENAEX)