Williamstown, a town of Bourke county, Victoria, Australia, 9 m. by rail S.W. of Melbourne. Pop. (1901) 14,083. Shipping is the chief business of the place, there being commodious piers, breakwater, also provision for the repair of vessels, patent slips and shipbuilding yards. Several quarries of superior basalt are worked near the town, and brown coal of good quality has also been found. The flourishing industries include woollen-milling, bottle-making, fodder-compressing, meat-freezing and cycle-making.