Aipysurus[n 1] is a genus of venomous snakes in the subfamily Hydrophiinae of the family Elapidae.

The first description of the genus Aipysurus was published by Bernard Germain de Lacépède in 1804, accommodating his description of a new species found in Australian seas, Aipysurus laevis, the type species of the genus.

[1] The genus is one of a small group of the viviparous sea snakes (Hydrophiinae: Hydrophiini) with Emydocephalus, also mostly restricted to the seas between Timor, New Guinea and northern Australia.

[4] The following species are recognised in the genus Aipysurus:[5] Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Aipysurus.

The same revision (Wells and Wellington, 1983) also resurrected the species name Aipysurus jukesii (Gray, 1846), recognised as a synonym of Lacépède's Aipysurus laevis.