Mamiellophyceae
{{Short description|Class of algae}}
{{Automatic taxobox
| image = Esquema Micromonas pusilla.jpg
| image_alt = Micromonas pusilla
| image_caption = Micromonas pusilla
| image_upright = 0.6
|taxon = Mamiellophyceae
|authority = Marin & Melkonian, 2010
|subdivision_ranks = Orders
|subdivision =
}}
Mamiellophyceae is a class of green algae in the division Chlorophyta.{{AlgaeBase taxon|name=Mamiellophyceae|id=96779 |access-date=10 March 2025}}
The class contains three orders containing 25 species.
- Order Dolichomastigales Marin & Melkonian (7 species)
- Order Mamiellales Moestrup (13 species)
- Order Monomastigales B.Marin & Melkonian (5 species)