Doodytrema carettochelydis n. gen., n. sp. (Digenea: Microscaphidiidae) is described from the pig-nosed turtle, Carettochelys insculpta (Cryptodira: Carettochelydidae) from the Daly River, Northern Territory, Australia. Doodytrema n. gen. is differentiated from other microscaphidiid genera by the absence of pharyngeal diverticula and the organization of vitellarium, namely the absence of an intercecal vitelline field or vitelline fields that merge behind the ovary. The uterus of Doodytrema carettochelydis n. sp. differs dramatically from other microscaphidiids in that the uterus does not run between the testes, but instead passes dorsal to them. This is only the second microscaphidiid species from Australian freshwater turtles.