The Pio Manzù International Research Centre, commonly referred to as the Pio Manzu Research Centre or Pio Manzu Centre, is a non-governmental environmental organization of the United Nations founded in 1969 and based in Rimini, Italy. The purpose of the centre to serve as an "institute for the in-depth study of the main economic and scientific aspects of the relationship between man and his environment". The centre holds an annual conference in Rimini, Italy, along with carrying out research projects and publishing the journal Environmental Structures.