Diplostomida is an order of trematodes in the subclass Digenea. It is synonymous with Strigeatida Poche, 1926.

Families

Order Diplostomida
*Suborder Diplostomata
**Superfamily Brachylaimoidea Joyeux & Foley, 1930
***Brachylaimidae Joyeux & Foley, 1930
***Hasstilesiidae Hall, 1916