C. maritimus

C. maritimus may refer to:
 * Cathormiocerus maritimus, a weevil species in the genus Cathormiocerus
 * Ceanothus maritimus, a buckthorn species
 * Chaerea maritimus, a spider species in the genus Chaerea
 * Cordylanthus maritimus, a broomrape species
 * Croton maritimus, a rushfoil species in the genus Croton
 * Cryptanthus maritimus, a bromeliad species