Michael Dorrell is an Australian billionaire businessman, and the co-founder of American private equity firm Stonepeak.
Dorrell grew up in Griffith, NSW, Australia, a farming town 7 hours drive south-west of Sydney. [1] He earned a bachelor of laws and a bachelor of commerce degree, both from the University of New South Wales in Sydney. [2]
He co-founded Stonepeak with Trent Vichie. [3]
In April 2025, Forbes estimated Dorrell's net worth at US$8.5 billion. [4]
The Wall Street Journal reported that Dorrell bought Tarpon Island, the only private island in Palm Beach, Florida for $150 million. [5]