James J. Berg (born July 1, 1964, Superior, Wisconsin) is an American writer, scholar, and editor. He is known primarily for his academic publications on Christopher Isherwood. He is also known for his work as a developmental editor working with writers on academic and nonacademic projects. His noted academic work includes The Isherwood Century (U Wisconsin Press), edited with Chris Freeman. Other works with Freeman include Conversations with Christopher Isherwood (University Press of Mississippi), The American Isherwood, and Isherwood in Transit. His most recent book is Isherwood on Writing (U Minnesota Press, 2008, 2022).