Halidrys

{{Short description|Genus of algae}}

{{Automatic taxobox

|image = Halidrys siliquosa.jpg

|image_caption = Halidrys siliquosa

|taxon = Halidrys

|authority = Lyngbye, 1819

}}

Halidrys is a genus of brown algae belonging to the family Sargassaceae.{{cite web |title=Halidrys Lyngbye, 1819 |url=https://www.gbif.org/species/8082072 |website=www.gbif.org |access-date=9 May 2021 |language=en}}

The species of this genus are found in Europe and Northern America.

Species:

• Halidrys dioica {{small|Gardn.}}
• Halidrys siliquosa {{small|(L.) Lyngb.}}