Douglas G. Greene is an American editor and writer who has made a significant contribution to the scholarship on L. Frank Baum and Oz. Most notably, he collaborated with Peter E. Hanff on the Bibliographia Oziana (1976, 1988, 2002), the primary bibliographic resource on the Oz literature. He also collaborated with Michael Patrick Hearn on a 1976 biography of W. W. Denslow. Among his minor works, Greene's essay "W. W. Denslow, Illustrator" appeared in The Journal of Popular Culture, Vol. 7 No. 1.