The Campion (Sideridis rivularis) is a species of moth of the family Noctuidae. It is found in from the northern part of the Iberian Peninsula, through the whole of Europe. To the east, it is found in Central Asia and Siberia, up to Manchuria. To the South, it is found in the Mediterranean Sea region (with the exception of Greece), parts of Asia Minor. In the Alps, it is found up to 1,600 meters.