C. robustus

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