Marble Bar is a town and rock formation in the Pilbara region of north-western Western Australia. It was the social centre of European settlers in the Pilbara region during the early 1900s, predating the construction of other towns now established. The town is additionally noted for its extremely hot climate, having a mean maximum temperature second in Australia only to Wyndham. It has also been noted for some palaeontological findings in its surroundings.