Beddomeia protuberata is a species of endemic freshwater snail in the family Tateidae, found in northern Tasmania, Australia.

The prostate gland in pallial roof is pyriform and its sections are closed and widely oval to circular.

The initial bend is aligned dorso-ventrally to obliquely rearwards, bounding with soft and glandular connective tissues.

Bursa copulatrix is small and vertically ovoid, not reaching the back pallial wall.

The ventral channel has vestibule in front, and the terminal genital is opening but small in size.

The beddomeia protuberata group is found only Tasmania, and is limited by many factors, both intrinsic and extrinsic.