Economic growth across the OECD area slowed to 0.5% in the second three months of 2019.
That compared to growth of 0.6% across the organisation's 36 member countries in the previous three month period.
Among the major seven economies, GDP growth slowed markedly in the UK, where the economy contracted by 0.2% compared to growth of 0.5% in the previous quarter.
In Germany, growth slowed from 0.4% in the opening months of the year to minus 0.1% in the second quarter.
Both countries could find themselves in a technical recession if contraction continued into the current quarter.
Growth in gross domestic product also decelerated in the US, but at a more moderate pace.
Growth slowed from 0.5% to 0.4%.
It was a similar picture for Japan, where growth slowed from 0.8% to 0.7%.
In Italy, there was zero growth in the second three months, while in France, GDP growth slowed from 0.3% to 0.2%.
For the European union and the euro zone, growth slowed to 0.2% from 0.5% and 0.4% respectively in the first quarter.
Year-on-year GDP growth for the OECD area slowed marginally to 1.6% compared with 1.7% in the previous quarter.