Port Augusta West is a settlement in the extreme northeast corner of Eyre Peninsula in South Australia, on the western side of the head of Spencer Gulf. It is now a suburb of Port Augusta, however it has a separate early colonial history. The Corporate Town of Port Augusta West was gazetted on 6 October 1887, and only merged into the Corporate Town of Port Augusta on 28 April 1932. The bridge across the head of Spencer Gulf connecting Port Augusta West to Port Augusta was built in 1926, replacing a punt.
Port Augusta West contains the junction of the Eyre Highway (to Eyre Peninsula and Western Australia), Stuart Highway (to the Far North and Northern Territory), and Augusta Highway (to Adelaide).