Mambourin is a newly established urban city in Victoria, Australia, 38 km (24 mi) south-west of Melbourne's Central Business District, located within the City of Wyndham local government area.

[1] The population of Mambourin is experiencing rapid growth, as evidenced by the construction of several thousand new homes annually.

Based on an average population of 3.1 people per household in the Wyndham LGA in the 2016 census, this will make the suburb's future population in excess of 18,000 persons.

Mambourin will be built around a planned new train station on the existing Regional Rail Link, allowing the suburb's residents to commute directly to the Melbourne CBD.

In addition, Mambourin will also have local convenience shopping, including a supermarket, up to 50 specialty stores and an entertainment precinct, as well as two public primary schools and one public secondary school.