The Pico dos Dias Observatory is an astronomical observatory owned and operated by the National Astrophysical Laboratory of Brazil (Portuguese: Laboratório Nacional de Astrofísica - LNA). It is located in the Brazilian state of Minas Gerais 37 kilometers (23 mi) from the city of Itajubá.
- A 1.6 m (63 in) Cassegrain reflector built by Perkin-Elmer first became operational in 1981.
- A 0.6 m (24 in) Ritchey-Chrétien telescope built by Boller & Chivens and installed in 1992 is jointly used by LNA and the University of São Paulo.
- A 0.6 m (24 in) Cassegrain reflector built by Zeiss Jena was purchased in the 1960s through coffee trade with East Germany. It was installed in 1983.