C. articulatus can refer to a few different species. The specific epithet articulatus means 'jointed' or 'articulated.'
- Celastrus articulatus, synonym for Celastrus orbiculatus, a plant in the family Celastraceae
- Ceocephalus articulatus , a weevil in the family Brentidae
- Cereus articulatus , a cactus in the family Cactaceae
- Chiton articulatus , a mollusk in the family Chitonidae
- Chlorocyperus articulatus, synonym for Cyperus articulatus, a sedge in the family Cyperaceae
- Chondrophycus articulatus , a seaweed in the family Rhodomelaceae
- Coleus articulatus , a plant in the family Lamiaceae
- Conus articulatus, synonym for Conasprella articulata, a sea snail in the family Conidae
- Corynephorus articulatus , a grass in the family Poaceae
- Crotalocephalus articulatus, a species of Crotalocephalus trilobite
- Curio articulatus, a plant in the family Asteraceae
- Cyclosorus articulatus , a fern in the family Thelypteridaceae
- Cyperus articulatus, a sedge in the family Cyperaceae