Hydraecia obliqua is a moth in the Noctuidae family. It is found in western North America, east to the Sierra Nevada in California and the crest of the Cascade Range in Oregon and Washington. It occurs continuously on the coast north to south-western British Columbia, with a disjunct northern population at Terrace, British Columbia. The habitat consists of the riparian zone along creeks and rivers of coastal rainforests, as well as oak savanna, mixed hardwood forests and valley grasslands.