The MCZ is comprised of 11 departments, 9 of which contain research collections (Entomology, Herpetology, Ichthyology, Invertebrate Paleontology, Invertebrate Zoology, Malacology, Mammalogy, Ornithology and Vertebrate Paleontology), in addition to the Ernst Mayr Library and the Concord Field Station. The MCZ is led by current Faculty Director Professor James Hanken, with oversight from the MCZ Faculty, the museum's governing body. Eleven faculty-curators and 4 emeriti provide additional vision and leadership to the museum's collections.
MCZ faculty-curators are Harvard faculty members within the Department of Organismic and Evolutionary Biology (OEB), leading active research areas that include Biodiversity and Systematics, Biology of Marine Systems, Biomechanics and Physiology, Ecology, Evolutionary Developmental Biology, Mathematical and Computational Biology, Neuroethnology and Behavioral Ecology, Paleobiology, and Population and Evolutionary Genetics.
The MCZ also has a productive associates roster. These affiliated researchers are hosted by individual departments and are reviewed and approved by the MCZ Faculty Board.