Dyspessa defreinai is a moth in the Cossidae family. It was described by Yakovlev in 2008. It is found in Turkey. The length of the forewings is 9–11 mm for males and 9–10 mm for females. The forewings of the males are white at the costal margin, the cell with a white brand and the outer marginal area is white. The hindwings are white, with a suffusion of greyish scales. The hindwings of the females are light brown.