Hélder Lima de Queiroz (Portuguese pronunciation: [ˈɛwdeʁ kejˈɾɔ(j)z]) (born 1963) is a Brazilian conservation biologist, primatologist, and fish behaviorist.
[1] He is the Director of the Instituto de Desenvolvimento Sustentável Mamirauá (MISD) in Amazonas state, dedicated to protecting the biodiversity of the Amazon flood forest and the well-being of those who live there, through community management of the environment.
[2] Queiroz received his doctorate in 2000 from St. Andrews University, Scotland, in Environmental And Evolutionary Biology, with the thesis "Natural history and conservation of pirarucu, Arapaima gigas, at the Amazonian várzea: Red giants in muddy waters".
He has discovered and named a new species of capuchin monkey (Queiroz, 1992).
He is a graduate faculty member in zoology at the Museu Paraense Emílio Goeldi, and animal sciences at Federal University of Pará State (UFPA), in Belém.