The organization said Tuesday that it is receiving the funding from Soros' Open Society Foundations. The grant challenges Human Rights Watch to raise an additional $100 million in matching private contributions.
It will require Human Rights Watch to increase its annual budget from $48 million to $80 million within five years.
Soros said in the statement that human rights are ``at the heart of open societies.''
The international human rights group is based in New York and is supported by contributions from individuals and foundations.