This article is about the miller moth of Europe. The name "miller" is also used for similar moths elsewhere, such as the genus Agrotis (e.g. Agrotis laysanensis). See Army cutworm for information on the miller moth found in the western United States.

The miller (Acronicta leporina) is a moth of the family Noctuidae. It is found throughout Europe apart from the far south-east.The range extends from the South of Spain, Central Italy and Bulgaria to Scotland and Central Scandinavia, crossing the Arctic circle in Finland and Norway. Outside Europe it is only known in North Africa. In the Eastern Palearctic and the Nearctic ecozone it is replaced by Acronicta vulpina, (Grote, 1883) formerly known as Acronicta leporina subspecies vulpina

The army cutworm (Euxoa auxiliaris) is a species of moth. Its nickname "miller moth" comes from the fine scales on its wings that rub off easily and remind people of the dusty flour that covers the clothing of a miller.