The Secret Millionaire Australia (2009)
- Genre: Reality
- First Air Date: 2009-10-07
- Last Air Date: 2010-09-20
- Total Seasons: 2
- Total Episodes: 10
- Status: Ended
- Episode Runtime: 50 min.
- Production Country: Australia
- Network: Nine Network
The Secret Millionaire is a reality television show, in which millionaires go incognito into impoverished communities and agree to give away tens of thousands of dollars. Members of the community are told the cameras are present to film a documentary.