Aipysurus mosaicus is a species of snake found in coastal seas of Australia.

Aipysurus mosaicus Sanders, Rasmussen, Elmberg, Mumpuni, Guinea, Blias, Lee & Fry was first described in 2012.

The population had previously been identified as a geographically isolated group of Aipysurus eydouxii, found near New Guinea and the Sunda shelf, but comparison of internal and external characters and examination of molecular evidence showed significant divergence in the phylogeny and supported the separation to a new species.

[3] An oceanic egg-eating snake of the elapid family, venomous predators found in seas and at terrestrial habitat.

[2] The distribution range of the species extends across coastal waters of northern Australia and New Guinea.