Wairarapa is a genus of sea snails, marine gastropod mollusks in the family Drilliidae.
This genus was proposed by Vella in 1954 for species resembling Splendrillia, but having a different protoconch, another subsutural fold and showing a stromboid notch
The species type of this genus is extinct and was endemic to New Zealand. W. duplaris occurs off North Australia to Queensland, Australia.