C. spinosa

C. spinosa may refer to:
 * Caesalpinia spinosa, the tara, a small leguminous tree species native to Peru
 * Calceolispongia spinosa, an extinct crinoid species
 * Calicotome spinosa, a very spiny, densely branched shrub species
 * Canadia spinosa, an extinct annelid worm species
 * Capparis spinosa, a perennial spiny shrub species
 * Caragana spinosa, a flowering plant species in the genus Caragana
 * Carica spinosa, synonym for a flowering plant species Jacaratia spinosa
 * Catunaregum spinosa, a flowering plant species in the genus Catunaregum
 * Celtis spinosa, a woodland plant species in the genus Celtis
 * Chaetophora spinosa, a beetle species in the genus Chaetophora
 * Chaetopleura spinosa, a mollusc species in the genus Chaetopleura
 * Chira spinosa, a jumping spider species in the genus Chira
 * Chloracantha spinosa, a flowering plant species
 * Cleocnemis spinosa, a running crab spider species in the genus Cleocnemis
 * Cleome spinosa, a flowering plant species in the genus Cleome
 * Cochranella spinosa, a frog species
 * Colletia spinosa, a flowering plant species in the genus Colletia
 * Conothele spinosa, a medium-sized spider species in the genus Conothele
 * Copa spinosa, a sac spider species in the genus Copa