Vietnamese Australians are Australians of Vietnamese descent. Vietnamese Australians are one of the largest groups within the global Vietnamese diaspora.

Australians, colloquially known as Aussies, are the citizens, nationals and individuals associated with the country of Australia. This connection may be residential, legal, historical or ethno-cultural. For most Australians, several of these connections exist and are collectively the source of their being Australian. Australian law does not provide for a racial or ethnic component of nationality, instead relying on citizenship as a legal status.