Cryptolectica ensiformis is a moth of the family Gracillariidae.

It is known from China (Hainan), India, Indonesia (Sulawesi), Japan (Tusima, the Ryukyu Islands, Honshū, Kyūshū, Shikoku) and Thailand.

The larvae feed on Quercus acuta and Quercus sessilifolia.

They probably mine the leaves of their host plant.

This article relating to moths in subfamily Acrocercopinae is a stub.