Allocreadiidae is a family of flatworms belonging to the order Plagiorchiida.

[1] In their adult stage they parasitize teleosts through their digestive system; they can also parasitize other vertebrates in freshwater ecosystems such as frogs, salamanders, and snakes.

[2] Allocreadiidae are distinguished from other Trematoda in the cercarial stage, where the cercaria have both an eye-spot and a stylet.

[2] The cercaria of Allocreadiidae also develop in lamellibranchs, whereas many other trematodes develop in gastropods.

This Trematoda (fluke)–related article is a stub.