Iceland on Friday was elected to take up the seat left vacant at the United Nations Human Rights Council after the United States quit the body over what it charges was anti-Israel bias.
In a vote at the General Assembly, Iceland picked up 172 votes during a secret ballot as the candidate put forward by the regional grouping for that seat.
Like the United States, Iceland has pledged to seek reform to the 47-nation Geneva-based body which monitors human rights worldwide and has the authority to set up inquiries of mass atrocities.
Iceland's Foreign Minister Gudlaugur Thor Thordarson said in an editorial last week that it was "time to address" the council's "shortcomings" and overcome the "perceived imbalance" in its focus through reform.
US Ambassador Nikki Haley announced Washington's withdrawal from the rights council last month, denouncing the body as a "protector of human rights abusers, and a cesspool of political bias."
In particular, Haley had slammed the council for adopting resolutions condemning Israel, which has come under scrutiny by the council for its treatment of Palestinians.
The US exit from the rights council was seen as the latest move by the administration of Donald Trump to step away from multilateral cooperation.
Washington has also quit the UN cultural agency UNESCO and cut funding to the United Nations, notably the UN Palestinian refugee agency UNRWA.