Marulan is a small town east of the Great Dividing Range and is located in the Southern Highlands of New South Wales, Australia. It is in the Goulburn Mulwaree Council local government area and the traditional lands of the Gundungurra people. It is located south-west of Sydney on the Hume Highway, although it bypasses the town proper. Marulan lies on the 150th meridian east. It has a railway station on the Main Southern railway line. Marulan was previously known as Mooroowoolen.