Baynes Island, part of the Waterhouse Island Group, consists of a group of three granite uninhabited islets connected at low tide, with a combined area of 1.62 hectares (4.0 acres), situated in Banks Strait, part of Bass Strait, lying close to the north-eastern coast of Tasmania, Australia.

[1] Other islands in the Waterhouse Group include Ninth, Tenth, Waterhouse, Little Waterhouse, Maclean, St Helens, Foster, Swan, Little Swan, Cygnet and Paddys islands and Bird Rock and George Rocks islets.

[1] Recorded breeding seabird and wader species are little penguin, Pacific gull, silver gull, sooty oystercatcher, black-faced cormorant and Caspian tern.

The grey teal has also nested on the island.

This Tasmania geography article is a stub.