Gnorimoschema washingtoniella is a moth in the family Gelechiidae.

It is found in North America, where it has been recorded from Washington state.

At the base is an unmottled fawn-colored spot, followed by a nearly pure white narrow oblique line, followed by an obliquely placed large unmottled fawn-colored spot in the middle of the wing, which nearly reaches the costal edge at the basal third, and gradually shades into the ground colour toward the costal edge further out.

At apical third is a large triangular ill-defined fawn-colored costal spot, and the tip of the wing is freely suffused with the same colour.

This article on a moth of the genus Gnorimoschema is a stub.