Susan Middleton (born 1948) is an American photographer and author based in San Francisco. She is most known for her photographs of rare and endangered animals, plants, and sites. She was Chair of the Department of Photography at the California Academy of Sciences from 1982 to 1995, where she currently serves as Research Associate.
Middleton has authored several books. Her latest book, Spineless: Portraits of Marine Invertebrates, the Backbone of Life, was published in 2014 to critical acclaim.