Lomentaria

{{Short description|Genus of algae}}

{{Automatic taxobox

| image = Lomentaria articulata 19880601c.jpg

| image_caption =

| taxon = Lomentaria

| authority = Lyngb.

| type_species = Lomentaria articulata

| type_species_authority = Lyngb.

}}

Lomentaria{{cite web |title=Lomentaria Lyngbye, 1819 |url=https://www.marinespecies.org/aphia.php?p=taxdetails&id=144245 |website=World Register of Marine Organisms |publisher=Flanders Marine Institute |access-date=2 November 2024}} is a genus of red algae, containing the following species:

• Lomentaria articulata Lyngb.
• Lomentaria caespitosa (Harv.) V.J.Champm. & Dromgoole