Eudonia singulannulata is a moth in the Crambidae family. It was described by Li, Li and Nuss in 2012. It is found in China (Gansu, Inner Mongolia, Ningxia, Qinghai, Sichuan). The length of the forewings is 7–9.5 mm. The forewings are somewhat suffused with pale brown to blackish brown scales. There is a blackish brown stripe basally and the antemedian, postmedian and subterminal lines are white. The hindwings are white to pale brown.