Lacinipolia acutipennis is a moth in the Noctuidae family. It is common throughout xeric, low elevation habitats of western North America. The core range includes the dry, western portions of the Great Plains, the Great Basin, and the western intermontane valleys north of the Sonoran zone, from southern Saskatchewan and Alberta southward to northern Arizona and New Mexico. The larvae are probably general feeders and may ascend shrubs to feed.