The Port Hedland–Marble Bar railway was a railway in the Pilbara region of Western Australia, running into the hinterland from the north-west coast.

The line was a Western Australian Government Railways (WAGR) 3 ft 6 in (1,067 mm) gauge branch line which was isolated from the rest of the WAGR system. Construction was commenced in 1909, undertaken by the firm of Henry Teesdale Smith, and the line was opened in July 1911.^[1][2]

The line had been proposed for some years before the date of opening.^[3][4]

The closest railhead of the main WAGR rail system was over 1,000 kilometres (620 mi) to the south at Meekatharra so most rolling stock and materials were shipped in and out Port Hedland.

Due to heavy losses on the line, the Western Australian government asked 1922 Royal Commission of Inquiry into the Railway Department to make a specific inquiry into the running of the Port Hedland railway. The commissioner found that "the railway cannot be run effectively so long as it is administered by the Railways Department" and recommended, among other things, that the running of the line be handed over to the Commissioner of the North-West.^[5] That was not done.

The reputation of the line for its slow running speed lived on long after the railway had closed, with Patsy Adam Smith's 1969 book about early railways noting the use of the ironic name the Spinifex Flyer.^[6]

The act for discontinuance of the railway was granted royal assent on 18 December 1950, and the last train to run out of Port Hedland operated on 25 October 1951. The railway closed on 31 October 1951.

Iron ore railways that have subsequently been constructed in the Pilbara region are standard gauge railways.

• Port Hedland
• Pippingarra
• Pundano
• Strelley
• Carlindi
• Pin Pin
• Shaw River
• Warralong
• Gorge Creek
• Coongan
• Eginbah
• Marble Bar

• Don Rhodes Mining and Transport Museum
• Goldsworthy railway
• Mount Newman railway
• Rail transport in Western Australia