Ellen Johnson Sirleaf is a Liberian politician who served as the 24th President of Liberia from 2006 to 2018. Sirleaf was the first elected female head of state in Africa. She was the first woman in Africa elected as president of her country.
She won the Nobel Peace Prize in 2011, in recognition of her efforts to bring women into the peacekeeping process. She has received numerous other awards for her leadership.
In June 2016, Sirleaf was elected as the Chair of the Economic Community of West African States, making her the first woman to hold the position since it was created.