Phenatoma roseum, or the pink tower shell, is a species of predatory sea snail, a marine gastropod mollusc in the family Borsoniidae.

The shell is spirally sulcate and longitudinally striate.

The suture is slightly impressed, marginate and subcrenulate.

It has a rose-ash color, purple-rose within the aperture.

[2] This species is endemic to New Zealand and Tasmania.