Amphiagrion saucium, the eastern red damsel, is a species of narrow-winged damselfly in the family Coenagrionidae. It is found in North America.
The IUCN conservation status of Amphiagrion saucium is "LC", least concern, with no immediate threat to the species' survival. The population is stable. The IUCN status was reviewed in 2017.
<Gallery> Amphiagrion_saucium_pair.jpg|pair Amphiagrion_saucium_1_male.jpg|Male Amphiagrion saucium 2.jpg|from above Amphiagrion saucium male.jpg| Male note the secondary genitalia, the hamulus Amphiagrion_saucium_female_1.jpg| female </Gallery>