Niphargellus glenniei, also known as the south-western groundwater shrimp,[2] is a species of amphipod from within the family Niphargidae.

A native of the United Kingdom, it has been placed in the UK Biodiversity Action Plan list of priority species.

[4] N. glenniei can be distinguished by a lack of spines on its telson lobes and rounded palmar angles on the organisms gnathopods.

[4] Niphargellus glenniei is endemic to England, where it has been recorded in 143 sites within the southwest of the country.

[6][4] Niphargellus glenniei lives in freshwater habitats such as caves, aquifers, wells, springs, quarries and mines.