Steinera is a genus of lichen-forming fungi in the family Koerberiaceae. It was circumscribed in 1906 by Austrian-Hungarian botanist Alexander Zahlbruckner, who dedicated the genus name to his friend Julius Steiner, an Austrian teacher and lichenologist. The genus was revised by Aino Henssen and Peter Wilfred James in 1982. In 2017, Damien Ernst and Roar Skovlund Poulsen described some new species, and recombined others into the genus based on a study of the genus in the subantarctic islands of Crozet and Kerguelen.

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