Heliothis australis is a species of moth of the family Noctuidae.

It is found from Chiapas in southern Mexico northward to New Mexico and Arizona.

Adults are on wing from May to October.

[1] It was previously considered part of Heliothis phloxiphaga, but H. australis is generally larger than H. phloxiphaga or the similar Heliothis acesias.

This Heliothinae article is a stub.