The Alexandre Sènou Adandé Ethnographic Museum is a museum in Porto-Novo, Benin. It was established in 1957 by the Dahomey Institute. It is operated by Alexandre Sènou Adandé, a noted ethnologist, who was chief archivist and librarian at the Institut Fondamental d'Afrique Noire of Dakar from 1948 to 1960.