Polystachya neobenthamia is a species of flowering plants from the orchid family, Orchidaceae.

[1] It is terrestrial,[2] lithophilic and grows among leaf litter and other detritus on rock faces.

This species produces slender, reed-like stems, which bear distichously arranged, linear leaves.

[1] Under the inclusion of P. neobenthamia the genus Polystachya is a monophyletic group.

This species is the sister group to Polystachya dendrobiiflora.