Western Sydney is also sometimes used to refer to the Greater Western Sydney region, which is the combination of Western Sydney as defined above and the Macarthur Region (also referred to as South-western Sydney).
Western Sydney juga pernah digunakan untuk mencakup wilayah Greater Western Sydney, yang mana merupakan gabungan Western Sydney seperti yang disebutkan di atas dan Wilayah Macarthur (juga disebut sebagai South-Western Sydney).