The Swan River Colony, also known as the Swan River Settlement, or just Swan River, was a British colony established in 1829 on the Swan River, in Western Australia. This initial settlement place on the Swan River was soon named Perth, and it became the capital city of Western Australia.

The name was a pars pro toto for Western Australia. On 6 February 1832 the colony was renamed the Colony of Western Australia, when the colony's founding lieutenant-governor, Captain James Stirling, belatedly received his commission. However, the name "Swan River Colony" remained in informal use for many years afterwards.

Admiral Sir Charles Howe Fremantle GCB RN (1 June 1800 – 25 May 1869) was a renowned British Royal Navy officer. The city of Fremantle, Western Australia, is named after him.