Members of the genus Actinia are familiar members of rocky shore communities across much of the world. However, to date, no Actinia species have been reported from the North American continent. Here, we report Actinia from an approximately 22 km length of the New Jersey, US shoreline, where it was first discovered in 2021. Morphology and DNA barcoding data (mitochondrial cytochrome c oxidase I and nuclear internal transcribed spacer) indicate that these populations are Actinia equina. The presence of these populations close to major ports in New Jersey, New York, and Philadelphia suggests a probable introduction from shipping activities.