| Ostreoida | |
|---|---|
| Spondylus sp | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
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| Order: | Ostreoida |

The order Ostreoida includes the oysters and other families of bivalves such as Pectinidae (mostly scallops).
In 2010, a new proposed classification system for the Bivalvia was published by Bieler, Carter & Coan, revising the classification of the Bivalvia, including the order Ostreoida.
Order Ostreoida (Oysters)
(Scallop shells and allies)
(File shells and allies)
(Saltwater mussels)
(Winged oysters and allies)