See also: cyanea
- A taxonomic genus within the family Cyaneidae – various jellyfish found in the northern waters of the Atlantic and Pacific oceans.
- A taxonomic genus within the family Campanulaceae – several nearly branchless trees native to Hawaii.
- (genus of jellyfish): Animalia - kingdom; Cnidaria - phylum; Medusozoa - clade; Scyphozoa - class; Discomedusae - subclass; Semaeostomeae - order; Cyaneidae - family
- (genus of plants): Plantae - kingdom; angiosperms - clade; eudicots, core eudicots, asterids, euasterids II - clades; Asterales - order; Campanulaceae - family; Lobelioideae - subfamily