Allan William Buchanan Gray (8 April 1938 – 10 November 2019) was a South African billionaire businessman and philanthropist.
He was the founder of the privately-owned Allan Gray Investment Management, and the non-profit Allan Gray Orbis Foundation, and the Allan and Gill Gray Charitable Trust.
Before he donated his stake in Allan Gray Investment Management, his net worth was estimated to have been US$10.5 billion (Rand 105 billion) in 2013.