珀斯（英语：Perth）是澳大利亚西澳大利亚州的首府，也是澳大利亚第四大城市。根据2008年6月的人口统计，珀斯都会区的人口共有160万人，是澳洲第四大城市，人口增长率高于国家统计的平均水平。

由于地处澳洲大陆西岸地中海气候地区，拥有温和的气候与天鹅河岸的别致景色，使珀斯得以成为非常受欢迎的观光旅游目的地。

珀斯拥有广阔的居住空间及高水准的生活质素，于每年的世界最佳居住城市评选中都是名列前茅，反映出珀斯无论居住环境，生活质素及社会福利等都是极佳的城市。珀斯人的友善态度世界公认，曾于2003年获得世界最友善城市称号，得到世界性的赞赏及认同。

Perth (/ˈpɜːrθ/) is the capital and largest city of the Australian state of Western Australia. It is the fourth-most populous city in Australia, with an estimated population of 2.02 million (as of 30 June 2014) living in Greater Perth. Perth is part of the South West Land Division of Western Australia, with the majority of the metropolitan area of Perth located on the Swan Coastal Plain, a narrow strip between the Indian Ocean and the Darling Scarp, a low coastal escarpment. The first areas settled were on the Swan River, with the city's central business district and port (Fremantle) both located on its shores. The Perth Metropolitan Region includes 30 local government areas, which themselves consist of a large number of suburbs, extending from Two Rocks in the north to Rockingham in the south, and east inland to The Lakes.