Cladostephaceae

{{Short description|Family of algae}}

{{Automatic taxobox

|image = Cladostephus_spongiosus.jpg

|image_caption = Cladostephus spongiosus growing in the intertidal of a rocky shore along the Irish west coast.

|taxon = Cladostephaceae

|authority = Oltmanns, 1922

}}

Cladostephaceae is a family of brown algae belonging to the order Sphacelariales in the class Phaeophyceae.

The family comprises a single genus:

• Cladostephus C.Agardh, 1817