Stellarangia namibensis is a species of saxicolous (rock-dwelling), crustose lichen in the family Teloschistaceae.

The type specimen was collected by the author from the gravel flats east of Cape Cross, in Omaruru, Namibia.

[3] The taxon was transferred to the genus Stellarangia in 2013 by Ulrik Søchting and colleagues, as part of a molecular phylogenetics-based restructuring of the Teloschistaceae.

[4] Stellarangia namibensis is one of the most common lichen species in Namibia's fog desert region; another is its close relative, S. elegantissima.

[3] The known range of Stellarangia namibensis was considerably expanded when it was reported to occur along the coast of the Atlantic Sahara in Morocco.