Naineris is a genus of polychaete annelids belonging to the family Orbiniidae.

[1] It was first described by Henri Marie Ducrotay de Blainville in 1828.

The type species is Nais quadricuspida Fabricius, 1780, currently accepted as Naineris quadricuspida (Fabricius, 1780).

[2] The genus has cosmopolitan distribution.

[1] Species found in Australia according to the Australian Faunal directory are:[3] IRMNG lists 23 species including that shown in the image and those above (with the exception of N.