Cossulus nasreddin is a moth in the Cossidae family. It is found in Uzbekistan. The length of the forewings is about 16 mm. The forewings are light brown, with a pattern of ochraceous spots and stripes. The marginal border is brownish and the submarginal area is brown and almost fused to a dark-brown postdiscal band. The basal area of the wing is brownish. The hindwings are brown.