The growth of the global economy is expected to slow to 2.9% in 2019 compared with 3% in 2018, the World Bank has said.
It cited elevated trade tensions and international trade moderation for the slowdown.
"At the beginning of 2018 the global economy was firing on all cylinders, but it lost speed during the year and the ride could get even bumpier in the year ahead," World Bank chief executive Kristalina Georgieva said in the semi-annual Global Economic Prospects report.
The World Bank outlook comes as the US and China have been engaged in a bitter trade dispute, which has jolted financial markets across the world for months.
The two economies have imposed tit-for-tat duties on each other's goods, although there were signs of progress yesterday as the two countries prepared to enter a third day of talks in Beijing.
Growth in the US is likely to slow to 2.5% this year from 2.9% in 2018, while China is expected to grow at 6.2% in the year compared with 6.5% in 2018, according to the World Bank.
Emerging market economies are expected to grow at 4.2% this year, with advanced economies expected to grow at 2%, the World Bank said in the report.