Toxin (disambiguation)

A toxin is a naturally occurring organic poison produced by the metabolic activities of living cells or organisms.

Toxin may also refer to:
 * Naturally occurring non-organic toxicants such as arsenic.
 * Synthetic analogs of naturally occurring organic poisons.
 * Toxin (novel) is a 1998 novel by Robin Cook
 * Toxin (comics), a fictional character by Marvel Comics universe, "grandson" of Venom and ally of Spider-Man
 * Toxins (journal), an academic journal focusing on Toxicology