Sahle-Work Zewde has been elected Ethiopian president by members of parliament.
She is the first woman to hold the post.
In June 2018, Sahle-Work was appointed by the United Nations Secretary-General as his Special Representative to the African Union, and Head of the United Nations Office to the African Union at the level of Under-Secretary-General.
Her election comes hours after former President Mulatu Teshome resigned from office.
Teshome tendered his resignation to parliament on Wednesday.