Oidaematophorus grisescens is a moth of the family Pterophoridae.

It is found in North America (including California, Colorado, Oregon, Montana, British Columbia and Alberta) and Mexico.

The legs are greyish white, tinged on the segments and on the tips of the spurs with fuscous.

The forewings are grey, slightly spotted with white and dusted with fuscous scales, the hind portion touched with ferruginous.

The hindwings are cinereous and the fringes whitish mixed with grey.