Athetis pallustris, the marsh moth , is a moth of the family Noctuidae. It is found in most of Europe, the southern Urals, southern Russia, Ukraine, eastern Turkey, Siberia, the Amur region, Mongolia and northern China. The wingspan is 18–34 mm. The males are considerably larger. The females have more rounded forewings and tend to fly less readily. Adults are on wing from May to June. The larvae feed on various low-growing plants, such as Plantago species (including Plantago major).