Protorthodes argentoppida is a moth in the family Noctuidae first described by James Halliday McDunnough in 1943.

It has a limited range within North America, occurring in xeric forested areas of various mountain ranges in New Mexico and in the White Mountains in east-central Arizona.

The ground of the forewings is silvery gray with a prominent black basal dash.

The hindwings are white, with a pale smoky tint in females.

Adults are on wing from mid-May to early July.