Eleanor N. Fish is a Canadian immunologist who is a Professor of Immunology at the University of Toronto. Her research considers how cytokines and chemokines interact with receptors in cells and tissue. She completed her undergraduate degree at the University of Manchester. She moved to King's College London for her graduate studies, where she worked toward a master's degree in virology. For her doctoral research, she joined the University of Toronto, where she studied cell biology. Her research established structure–function relationships in human interferons derived from recombinant DNA. Fish is involved in investigations into cytokines and the development of broad-spectrum antiviral drugs. To understand rheumatoid arthritis and multiple sclerosis, Fish has investigated the immune responses that underpin autoimmunity. Her research keywords include cytokines: interferons and chemokines; broad spectrum antivirals; autoimmune diseases; and cancer metabolism.