The Coffin Bay tramway was a 1,435 mm (4 ft 8+1⁄2 in) gauge railway located on the Eyre Peninsula of South Australia.
Running for 40 kilometres from Coffin Bay to Billy Lights Point, Port Lincoln it was built and operated by BHP to carry lime sand for steelmaking at Whyalla, Port Kembla and Kwinana.
[2][4][5] Two EMD G12 DE class (DE08/09) locomotives were ordered from Clyde Engineering, Sydney for the line.
[4][7] Following storm damage to the wharf at Billy Lights Point, the line closed in 1989.
The track was lifted in the early 2000s and reused on the Eyre Peninsula Railway.