Crocker's sea snake (Laticauda crockeri) is a species of venomous snake in the subfamily Laticaudinae of the family Elapidae. The species is native to Oceania.
The specific name, crockeri, is in honor of American railroad magnate Charles Templeton Crocker (1885-1948), who allowed the California Academy of Sciences to use his yacht, the Zaca, for scientific expeditions.
L. crockeri is endemic to Lake Tegano, a brackish lake on Rennell Island in the Solomon Islands.
L. crockeri is sexually dimorphic, with females growing to be longer and heavier than males. Females may attain a snout-to-vent length (SVL) of , but males may attain only in SVL. Maximum tail length is about in both sexes.
L. crockeri is currently listed as "Vulnerable" by the International Union for Conservation of Nature (IUCN) due to the extremely limited distribution of the species.