Spirulina

Spirulina may refer to:

Biology

 * Spirulina (genus), a genus of cyanobacteria (blue-green algae)
 * Spirulina (dietary supplement), a cyanobacterium product and biomass that can be consumed by humans and other animals
 * Arthrospira, a genus of cyanobacteria closely related to the Spirulina genus, with three species that make up the above dietary supplement, despite its name
 * Spirulina (suborder), a group of cephalopods
 * Spirula, the only extant member of that suborder