Plexauridae is a family of marine colonial octocorals in the phylum Cnidaria.

This is covered by a layer of tissue called coenenchyme in which is embedded calcareous sclerites.

The sclerites are very varied in form in the Plexauridae, and examination of their morphology is helpful in identifying the different species.

The calyces in which the polyps sit are strengthened by further sclerites and have eight fine dividing walls called septa.

[2] The World Register of Marine Species includes these genera in this family:[3]