Epiactis is a genus of sea anemones in the family Actiniidae.

At this time, two new species, E. lisbethae and E. fernaldi were described and E. ritteri was restored to the genus in which it was originally placed.

Four species of Epiactis are known from the Pacific coast of North America, the external brooders E. prolifera and E. lisbethae which differ in sexuality and brooding periodicity, and the internal brooders E. ritteri and E. fernaldi, which differ in their cnidocyte armoury, sexuality and histology.

The tentacles that surround the oral disc are short and unbranched and not narrower at the base.

The mesenteries in the gastroventicular cavity are arranged hexagonally and are greater in number at the base than at the margin.