Cirsonella waikukuensis is a minute sea snail, a marine gastropod mollusc in the family Skeneidae.
The height of the shell attains 0.7 mm, its diameter 0.9 mm. Cirsonella waikukuensis is a very small deep-water gastropod. The shell height reaches approximately 0.8 mm and its diameter about 1 mm. The shell is discoidal with a low spire, fine spiral sculpture, and a round aperture.
This marine species is endemic to New Zealand and occurs off North Cape at a depth of 29 m.