C. robustus may refer to: Callulops robustus, a frog species found in Indonesia and Papua New Guinea Campephilus robustus, the robust woodpecker, a bird species found in Argentina, Brazil and Paraguay Chaetodon robustus, the three-banded butterflyfish, a fish species endemic to Cape Verde Cisticola robustus, the stout cisticola, a bird species found in Africa
Synonyms Crocodylus robustus, a synonym for Voay robustus, an extinct crocodilian species found from Madagascar