Meridion

{{Short description|Genus of diatoms}}

{{Automatic taxobox

|image = Meridion circulare kramer.jpg

|image_caption =Meridion circulare

|taxon = Meridion

|authority = C.A.Agardh, 1824

}}

Meridion is a genus of diatoms belonging to the family Fragilariaceae.{{cite web |title=Meridion C.A.Agardh, 1824 |url=https://www.gbif.org/species/3192513 |website=www.gbif.org |access-date=30 April 2021 |language=en}}

The genus has cosmopolitan distribution.

Species:

• Meridion alansmithii {{small|L.A.Brant, 2003}}
• Meridion circulare {{small|(Greville) C.Agardh, 1831}}
• Meridion coccocampyla {{small|Ehrenberg, 1854}}