Marcos Ambrose (born 1 September 1976) is an Australian race car driver. He drives the #9 Stanley Tools/DeWalt Ford Fusion for Richard Petty Motorsports in the NASCAR Sprint Cup Series. He was the Australian V8 Supercar champion in 2003 and 2004, and is credited with reviving Ford Racing in Australia, after years of Holden domination. Australian motorsport journalists as part of V8X magazine’s 10-year celebrations have rated Marcos Ambrose as the best ever V8 Supercar driver. The journalists were polled on who they thought were the 10 greatest V8 Supercar drivers, excluding the previous Group A category of Australian Touring Cars.
In 2006, he raced in the NASCAR Camping World Truck Series, piloting the #20 Team Australia/Aussie Vineyards Ford for Team Australia. He moved up to the NASCAR Nationwide Series in 2007, driving the #59 Kingsford Charcoal Ford Fusion for JTG Daugherty Racing.
Marcos grew up in Launceston, in Tasmania, Australia, the son of another racing driver, Ross Ambrose and was educated at Scotch Oakburn College. He began racing karts at the age of ten. He won four Tasmanian state junior karting titles and was the Australian karting champion in 1995 in the Clubman Heavy class at the Dubbo circuit in New South Wales driving for Tony Kostelnak racing.