Nelson Bay is a rural locality in the local government area (LGA) of Circular Head in the North-west and west LGA region of Tasmania.

The locality is about 74 kilometres (46 mi) south-west of the town of Smithton.

The 2016 census recorded a population of 4 for the state suburb of Nelson Bay.

The Nelson Bay River flows through from east to west.

[3] Route C214 (Temma Road) runs through from north to south.