Dorothy Johnson Knull (born Dorothy Marguerite Johnson, 1908–1992), U.S. entomologist (Hemiptera: Cicadellidae).

Spouse of Josef Nissley Knull.

Taxon names authored

(List may be incomplete)

• 8 taxon names authored by Dorothy Johnson Knull

Publications

(List may be incomplete)

• DeLong, D.M. & Johnson, D.M. 1936. Six new species of Typhlocyba from the United States. (Homoptera: Cicadellidae). Entomological News 47: 101–104. BHL.
• Knull, D.M. & Auten, M. 1937. Some Erythroneura of the maculata group from Decatur, Georgia (Homoptera, Cicadellidae). Annals of the Entomological Society of America 30(4): 572–578. DOI: 10.1093/aesa/30.4.572 Reference page. 
• Knull, D.J. 1944. A Californian Acinopterus (Homoptera: Cicadellidae). Entomological News 55: 62–63. BHL.
• DeLong, D.M. & Knull, D.J. 1946. Check list of the Cicadellidae (Homoptera) of America, north of Mexico. Ohio State University Press, Columbus, V + 102 pp. [1945] PDF.
• Knull, D.J. 1954. A Frigartus from California and an Erythroneura from South Dakota (Homoptera: Cicadellidae). Entomological News 65: 37–39. BHL.