How many places in Australia are called Mount O’Brien?

There are 2 places named Mount O’Brien in Australia.

All places in the world called "Mount O’Brien".

Location Mount O’Brien:

• Tasmania
• Western Australia

Cities

Kingston (5)
Gladstone (5)
Hamilton (5)
Springfield (4)
Woodstock (4)
Darlington (4)
Rosedale (4)
Richmond (4)
Gordon (4)
Windsor (4)
Newstead (4)
Cremorne (4)
Salisbury (3)
Stony Creek (3)
Dundas (3)
Kangaroo Flat (3)
Swan Reach (3)
Beaconsfield (3)
Bridgewater (3)
Elliott (3)
Forest Hill (3)
Red Hill (3)
Warburton (3)
Williamstown (3)
Middleton (3)
Sassafras (3)
Somerton (3)
Wattle Flat (3)
Black Springs (3)
Flinders (3)