Cairns is a regional city and Local Government Area located in Queensland, Australia. Originally settled in 1876, and named after William Wellington Cairns (the then Governor of Queensland) to serve miners heading for the Hodgkinson River goldfield, the settlement declined when an easier route was discovered from Port Douglas. However, Cairns' future was secured as it developed into a railhead and major port for the exportation of sugar cane, gold, precious metals and agricultural industries from the surrounding coastal and Tableland regions. The city is rapidly expanding, with a population of 122,731 (as of 2006) and is reliant on the sugar and tourism industries.

Cairns lies about 1,701 km (1,057 mi) from Brisbane and about 2,420 km (1,504 mi) from Sydney by road. It is a popular travel destination for foreign tourists because of its tropical climate and proximity to many attractions. The Great Barrier Reef can be reached in less than an hour by boat. The Daintree National Park and Cape Tribulation, about 130 kilometres (80 miles) north of Cairns, are popular areas for experiencing a tropical rainforest. It is also a starting point for people wanting to explore Cooktown, Cape York Peninsula, and the Atherton Tableland.

The Borough of Cairns was established under the Local Government Act 1878 on 28 May 1885. With the passage of the Local Authorities Act 1902, Cairns became a town council on 31 March 1903. On 12 October 1923, it was proclaimed a City.

On 21 November 1991, the Electoral and Administrative Review Commission, created two years earlier, produced its second report, and recommended that local government boundaries in the Cairns area be rationalised, and that the Shire of Mulgrave be dissolved and amalgamated with the City of Cairns. The Shire at that stage had a population of 54,783 (1991) while the City had 49,361. Both authorities had chambers in the Cairns CBD. The old City Council chambers were located on Abbott Street, and have since been converted into a city library.