Cadmium is a pollutant of concern found in Antarctic soils near research stationsparticularly associated with legacy waste tip sites. Elevated concentrations of cadmium may threaten Antarctic ecosystems; however, currently there is little information on the responses of terrestrial Antarctic organisms to cadmium. A range of microinvertebrates that inhabit Antarctic soils and lakes play a key role in the functioning of Antarctic terrestrial ecosystems, including organic matter decomposition and nutrient recycling. This study investigates the response of a common Antarctic limnoterrestrial rotifers bdelloid rotifer, Philodina sp., to cadmium. A toxicity test was undertaken with Philodina sp. in a soil elutriate spiked with cadmium concentrations from 0 – 7500 ug[Cd]/L. Observations (normal movement and survival) were recorded following 24, 48, 96 h and 7 and 14 d of exposure. Tests were conducted in petri dishes with each replicate containing ten individuals and were kept incubated at 10 °C on a 12/12 h light regime. Sensitivity to cadmium increase through time, with 10% and 50% effective (EC10 and EC50) for normal movement of 1300 and 7400 ug[Cd]/L at 24 h, and 1200 and 2300 ug[Cd]/L at 7 d. This research provides novel toxicological information on the effects of cadmium on a limnoterrestrial Antarctic rotifer (Philodina sp.) and will be used to assist in the development of guidelines to protect Antarctic soil biota from cadmium contamination.