David Allan Young Jr. (May 26, 1915, Wilkinsburg, Pennsylvania – June 8, 1991, Louisville, Kentucky) was an American entomologist who specialized in the taxonomy of the Cicadellidae and authored a comprehensive treatment of the family with numerous genera and species described and named by him. This work in three parts, Taxonomic Study of the Cicadellinae (Homoptera: Cicadellidae), covered 292 genera.