Octineon is the sole genus of sea anemones in the monotypic family Octineonidae.

[1] There are few records of this genus, but it has been reported living within the North Pacific waters, and is thought to have a much wider distribution than that.

[2] It is difficult to identify due to the fact that it's usually flat against bedrock on the sea floor.

[2] The genus contains the following species:

This Actiniaria-related article is a stub.