Feltia herilis, the herald dart or Master's dart, is a moth of the family Noctuidae.

The species was first described by Augustus Radcliffe Grote in 1873.

It is found in North America from Vancouver Island to Newfoundland, north to the Northwest Territories border and south to the Gulf Coast.

Adults are on wing from July to October.

The larvae feed on a wide variety of plants, including crops, forages, vegetables, forbs and herbs.