Scale insects (Hemiptera: Coccoidea) are notorious pests, especially of perennial plants. They are serious pests of fruit and nut trees, ornamental shade trees and shrubs, forest trees, greenhouse and indoor plantings. In the present study, new data are given for 13 species of scale insects from Turkey as follows: Coccidae (1 sp.), Cerococcidae (1 sp.), Diaspididae (2 spp.), Pseudococcidae (8 spp.) and Rhizoecidae (1 sp.). Chorizococcus malabadiensis Kaydan sp. n. is described and illustrated as a new species and 8 species are recorded for the first time from Turkey.