The estuarine sea snake (Hydrophis vorisi), also known commonly as Kharin's sea snake, is a species of marine venomous snake in the family Elapidae.

The species is native to waters around the northern tip of Australia in the Torres Strait.

[1] The specific name, vorisi, is in honor of American herpetologist Harold Knight Voris (born 1940).

[2] The preferred natural habitat of H. vorisi is the neritic zone.

This Elapidae article is a stub.