Sahydroaraneus is a genus of spiders in the family Theraphosidae. It is found in India and was first described in 2014 by Mirza & Sanap.
As of 2023, it contains 4 species, all in India.
They are hirsute, featuring long setae on the fourth tarsi. They have thick black setae on the dorsal surface of the chelicerae. The primary tibial apophysis consists of a basal stalk, from which arises a thin, elongated black spine. A secondary tibial apophysis is absent.
They usually live in moist deciduous forests under rocks or decaying logs and make a horizontal tubular network of webs for retreat. They remain hidden during the daytime and forage during night.