- a historic county in central Scotland.
- a city in this county: a port on the Tay River.
- a city in and the capital of Western Australia, in SW Australia.
- a city in central Scotland, in Perth and Kinross on the River Tay: capital of Scotland from the 12th century until the assassination of James I there in 1437. Pop: 43 450 (2001)
- a city in SW Australia, capital of Western Australia, on the Swan River: major industrial centre; University of Western Australia (1911). Pop: 1 176 542 (2001)
