Showbiz
Rex Features
According to People, the Revolutionary Road star has pledged $1 million (£619,693) to the Clinton-Bush Haiti Fund.
In a statement, former president George W. Bush said: "I salute Leonardo DiCaprio for his extraordinary generosity.
"This donation sends a clear message to the people of Haiti that America's commitment to helping rebuild their country is strong."
He added: "I thank Leo for setting a wonderful example for all Americans of helping a neighbour in need."
Other stars who have made donations include George Clooney, Brad Pitt and Angelina Jolie, Sandra Bullock and Gisele Bundchen.
> Madonna, Beyoncé join 'Help For Haiti Now'
More: Leonardo DiCaprio, Showbiz
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