Radiospongilla sceptroides is a species of freshwater sponge in the family Spongillidae.

It was described as Spongilla sceptroides by Scottish-born Australian zoologist William A. Haswell in 1883, who discovered it growing on submerged wood in a pond in the vicinity of Brisbane.

[1] A 1968 review of freshwater sponges failed to locate Haswell's original type specimen, so a new one was selected from the Merrika River near Womboyn in New South Wales.

[4] A bright emerald green in colour and firm and rubbery in consistency, the sponge can spread laterally to some size, the new type specimen measured 46 cm × 20 cm (18 in × 8 in), growing on a flat rock.

[2] Radiospongilla sceptroides is widely distributed (although fragmented) along Australia's eastern coastline, from central Queensland through New South Wales and into Victoria, as well as New Zealand and New Caledonia.