Loliolus is a genus of squid from the family Loliginidae from the Indo-Pacific region.

They are small squids of less than 150 mm (5.9 in) in mantle length which have an expanded tentacular club.

The males' hectocotylus has a ventral crest which is created by the fusion of the protective membrane with the ventral series of papillae and this crest completely obscures the conical shape of the papillae.

[3] Their eggs are small and the males' spermatophore has a short cement body.

The two subgenera are distinguished by the hectocotylus which in Loliolus encompasses the entire arm and there are no unmodified suckers while in Nipponololigo the arm is only partly hectocotylsed and has normal suckers at its base.