Harvard University Museum of Comparative Zoology

The Museum of Comparative Zoology is a zoology museum located on the grounds of Harvard University in Cambridge, Massachusetts. It is one of three natural-history research museums at Harvard, whose public face is the Harvard Museum of Natural History. Harvard MCZ's collections consist of some 21 million specimens, of which several thousand are on rotating display at the public museum. In July 2021, Gonzalo Giribet, Alexander Agassiz Professor of Zoology at Harvard and Curator of Invertebrate Zoology, was announced as the new director of the museum.Many of the exhibits in the public museum have not only zoological interest, but also historical significance. Past exhibits have included a fossil sand dollar found by Charles Darwin in 1834, Captain James Cook's mamo, and two pheasants that once belonged to George Washington, now on loan to Mount Vernon in Virginia.

The research collections of the MCZ are not open to the public.