Williamstown North is a suburb of Melbourne, Victoria, Australia, 7 km south-west of Melbourne's central business district. Its local government area is the City of Hobsons Bay. At the 2011 census, Williamstown North had a population of 1,544.
The suburb is bounded to the north by the Geelong railway line, to the west by the Altona branch of the Werribee railway line, to the east by Champion Road, and to the south by Kororoit Creek Road.
Williamstown North is home to the Railway Museum operated by the Australian Railway Historical Society, in Champion Road, on the south-east corner of the Newport Workshops. It is a short walk from the North Williamstown railway station. The Museum features the largest collection of Victorian Railways steam locomotives. Other exhibits include electric and diesel locomotives, suburban and country passenger carriages, guards vans, a selection of freight wagons and numerous railway artefacts.