The Professor Aristóteles Orsini Planetarium, also known as the Ibirapuera Planetarium, is a planetarium in Ibirapuera Park, São Paulo. It opened in January 1957, and was the first planetarium in Brazil and Latin America. It is one of three planetaria in São Paulo, with the others being Carmo Planetarium and the Johannes Kepler Planetarium at Sabina Escola Parque do Conhecimento.