Black moss may refer to:
Bryoria fremontii, a lichen eaten by First Peoples in North America; Fat choy (Nostoc flagelliforme), a terrestrial cyanobacteria eaten in Chinese cuisine; Spanish moss (Tillandsia usneoides), a flowering plant, particularly after it has been dried for use as stuffing and decoration; Numerous species of dark-coloured moss (Bryophyta), possibly species of the genera Grimmia, Andreaea, Syntrichia, or Cinclidotus; Black Moss Press, a Canadian literary press founded in 1969. A geographical area of moorland between Diggle and Meltham in West Yorkshire