Castlemaine, a town of Talbot county, Victoria, Australia, 78 m. by rail N.N.W. of Melbourne. Pop. (1901) 5704. The gold-mines here were among the first discovered in the colony, and dredging for gold is carried on in Barker’s and Forrest creeks, at the junction of which the town stands. Slate and flagstone are largely quarried in the district, which also produces wine and much fruit, especially apples. Castlemaine has a reputation as a health resort in cases of pulmonary complaints.