| Croton chamelensis E.J. Lott, 1987 |
| Croton chiapensis Lundell, 1942 |
| Croton chichenensis Lundell, 1940 |
| Croton ciliatoglandulifer Ortega, 1797 |
| Croton ciliatoglandulosus Steud., 1840 |
| Croton cladotrichus Müll. Arg., 1865 |
| Croton coatepensis Brandegee, 1908 |
| Croton conduplicatus Kunth, 1817 |
| Croton conspurcatus Schltdl., 1832 |
| Croton corchorifolius Geiseler, 1807 |
| Croton cortesianus Kunth, 1817 |
| Croton corymbulosoides Radcl.-Sm. & Govaerts, 1997 |
| Croton corymbulosus Engelm., 1879 |
| Croton corymbulosus var. thermophilus M.C. Johnst., 1959 |
| Croton craspedotrichus Griseb., 1865 |
| Croton culiacanensis Croizat, 1945 |
| Croton cupulifer McVaugh, 1961 |
| Croton decalobus Müll. Arg., 1865 |
| Croton deppeanus Steud., 1840 |
| Croton diffusus Geiseler, 1807 |