Newcastle Street is a road in Perth, Western Australia.

Newcastle Street is named after Henry Pelham-Clinton, 5th Duke of Newcastle, who was Secretary of State for the Colonies from 1852 to 1854.

[2] It has been in the past parts of major bus routes leaving Perth.

[3] The street has also been identified in name, by schools and businesses.

[5] It has been in the scope of the Northbridge Urban Renewal project.