The grey slender loris is a species of primate in the family Loridae. It is found in India and Sri Lanka. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical moist lowland forests. It is threatened by habitat loss.
Like other lorises, they are nocturnal and emerge from their roost cavities only at dusk. They are mainly insectivorous. In southern India, the dominate race is often found in acacia and tamarind dominated forests or scrubs near cultivations. Males hold larger home ranges than females.