ปัจจุบัน จำแนกได้ทั้งสิ้น 29 ชนิด [6]

• Crotalus adamanteus Palisot de Beauvois, 1799
• Crotalus aquilus Klauber, 1952
• Crotalus atrox Baird & Girard, 1853
• Crotalus basiliscus (Cope, 1864)
• Crotalus catalinensis Cliff, 1954
• Crotalus cerastes Hallowell, 1854
• Crotalus durissus Linnaeus, 1758
• Crotalus enyo (Cope, 1861)
• Crotalus horridus Linnaeus, 1758
• Crotalus intermedius Troschel, 1865
• Crotalus lannomi Tanner, 1966
• Crotalus lepidus (Kennicott, 1861)
• Crotalus mitchellii (Cope, 1861)
• Crotalus molossus Baird & Girard, 1853
• Crotalus oreganus Holbrook, 1840
• Crotalus polystictus (Cope, 1865)
• Crotalus pricei Van Denburgh, 1895
• Crotalus pusillus Klauber, 1952
• Crotalus ruber Cope, 1892
• Crotalus scutulatus (Kennicott, 1861)
• Crotalus simus Latreille in Sonnini & Latreille, 1801
• Crotalus stejnegeri Dunn, 1919
• Crotalus tigris Kennicott in Baird, 1859
• Crotalus tortugensis Van Denburgh & Slevin, 1921
• Crotalus totonacus Gloyd & Kauffeld, 1940
• Crotalus transversus Taylor, 1944
• Crotalus triseriatus (Wagler, 1830)
• Crotalus viridis (Rafinesque, 1818)
• Crotalus willardi Meek, 1905