| Croton varelae V.W. Steinm., 2000 |
| Croton verapazensis Donn. Sm., 1912 |
| Croton verticillatus Sessé & Moc., 1890 |
| Croton virletianus Müll. Arg., 1865 |
| Croton vitifolius Lundell, 1942 |
| Croton watsonii Standl., 1923 |
| Croton websteri Mart. Gord. & J. Jiménez Ram., 1990 |
| Croton wigginsii L.C. Wheeler, 1939 |
| Croton wilburii McVaugh, 1961 |
| Croton xalapensis Kunth, 1817 |
| Croton yecorensis V.W. Steinm. & Felger, 1998 |
| Croton ynesiae Croizat, 1940 |
| Croton yucatanensis Lundell, 1940 |
| Croton zavaletae Conz.ex Rzed., 1988 |
| Crotoneae Dumort, 1829 |
| Crotonoideae Pax, 1884 |
| Crotonopsis Michx., 1803 |
| Ctenomeria Harv., 1842 |
| Cupameni Adans., 1763 |
| Cupamenis Raf., 1838 |