Download coordinates as: Welsby is a coastal locality on Bribie Island in the City of Moreton Bay, Queensland, Australia.

Apart from these protected areas, the remaining land is a very narrow strip along the west coast beside the Pumicestone Channel.

[8] There are two lagoons on the eastern shore of the locality: The locality is named for Thomas Welsby, a Queensland politician who enjoyed yachting and fishing in Moreton Bay.

The nearest government primary school is Banksia Beach State School in neighbouring Banksia Beach to the south.

[3] Wild Banks is a 176.213-hectare (435.43-acre) artificial reef in the Moreton Bay Marine Park (26°54′31″S 153°17′34″E / 26.9086°S 153.2927°E / -26.9086; 153.2927 (Wild Banks)) offshore on the western (ocean) side of Welsby.