| Subspecies | Taxon author | Common name | Geographic range |
|---|---|---|---|
| A. p. conanti | Gloyd, 1969 | Florida cottonmouth | The United States, in extreme southern Georgia and virtually all of the state of Florida, including many of the islands off the coast |
| A. p. leucostoma | (Troost, 1836) | Western cottonmouth | The United States, from southern Alabama along coast of the Gulf of Mexico, including many offshore islands, to southeastern and central Texas, and north to Oklahoma, Missouri, Illinois and Indiana |
| A. p. piscivorus | (Lacépède, 1789) | Eastern cottonmouth | The United States in southeastern Virginia, the Atlantic Coastal Plain and lower Piedmont of North and South Carolina, including the banks, peninsulas and islands along the Atlantic coast, and west across Georgia |
Read more about this topic: Agkistrodon Piscivorus