The news was confirmed by a representative for the couple. The two organisations are Global Action for Children and Medicins Sans Frontieres (Doctors Without Borders).
In a statement, the actress explained, "In the most troubled parts of the world — places that much of the world has abandoned — MSF is always there. I have seen these brave men and women working in war zones and horrific conditions and I deeply admire them."
Angelina Jolie is a Good Will Ambassador for the United Nations.
Jolie and Pitt met while filming Mr. and Mrs. Smith last year. The two stars are the parents of two adopted children and one biological child.
"I have seen these brave men and women working in war zones and horrific conditions and I deeply admire them."