Pierre Kauffman Radio Observatory (Portuguese: Rádio Observatório Pierre Kauffman - ROPK), formerly known as the Itapetinga Radio Observatory[1] (Portuguese: Rádio Observatório de Itapetinga - ROI), is a radio observatory located in the municipality of Atibaia in the state of São Paulo in Brazil.

[2] Control of the facility was passed to the National Institute for Space Research (INPE) in 1982.

[2] Today it is managed jointly by INPE, UPM, University do Vale do Paraíba (Univap), Universidade de São Paulo (USP), and Universidade Federal de Itajubá (UNIFEI).

[3] In addition to the telescopes, the observatory has living quarters for visiting scientists.

ROI is located inside a small radio quiet zone.