Cape Lambert is a port facility operated by Rio Tinto Iron Ore in the Pilbara region of Western Australia. It is located 40 kilometres north-east of Karratha. While the names of Cape Lambert and Port Walcott are often used interchangeably, the official name of the port is Port Walcott and the iron ore loading facility within is referred to as "Cape Lambert wharf". In shipping documents, it is often referred to as Port Walcott.