Bullock's contribution went to Doctors Without Borders' emergency operations in Port-Au-Prince.
Los Angeles: More Hollywod big names are coming forward with cash donations to help the relief effort in Haiti.
Actress Sandra Bullock says she donated US$1 million toward earthquake relief and Madonna has announced $250,000.
Bullock's contribution went to Doctors Without Borders' emergency operations in Port-Au-Prince.
Madonna's gift was to Partners In Health, a longtime medical provider in Haiti.
Earlier Friday, Not On Our Watch, an advocacy and grantmaking group founded by George Clooney, Brad Pitt and others, donated $1 million to Partners in Health.
The international Red Cross estimates 45,000 to 50,000 people were killed in the earthquake, which devastated the Caribbean nation on Tuesday.