Protorthodes antennata is a moth in the family Noctuidae first described by William Barnes and James Halliday McDunnough in 1912.

It has a small distribution in North America, extending from central Arizona to northernmost Mexico.

The reniform spot on the forewings is not outlined like in other Protorthodes species.

There is a series of tiny white dots that partially define the reniform spot, and a series of tiny yellow dots that form a partial outer border of the spot.

Adults have been recorded on wing from mid-May to mid-June and in October.