Stygarctus keralensis is a species of marine tardigrade.

It is described from the intertidal area of Vadakara beach, Kerala it can be easily differentiated from closely related species S.

Jayachandran of Cochin University of Science and Technology, Kerala, India and J.G.

This species has been named after "Kerala State" situated in the south west coast of India where this species live.

The present discovery is an outcome of an ongoing Ministry of Earth Sciences-National Centre for Earth Science Studies study on the ecology and diversity of submarine groundwater habitats of Kerala led by Sivasankaran Bijoy Nandan.