The City of Maribyrnong is a local government area within the metropolitan area of Melbourne, Australia. It comprises the inner western suburbs between 5 and 10 kilometres from Melbourne city centre. It was formed in 1994 from the merger of the City of Footscray and parts of the City of Sunshine. In June 2018, Maribyrnong had a population of 91,387.

The City of Sunshine was a local government area about 13 kilometres (8 mi) west of Melbourne, the state capital of Victoria, Australia. The city covered an area of 80.05 square kilometres (30.91 sq mi), and existed from 1860 until 1994.