The rate was lower than expected, and compared with a pace of 0.4% recorded in the previous quarter.
The pace of expansion in Germany, the eurozone's largest economy, slowed, but France returned to growth.The European Central Bank (ECB) is widely expected in December to expand its stimulus programme, which aims to lift inflation and support growth.Higher imports Germany's economy grew by 0.3% in the July-to-September period, down from 0.4% in the previous quarter.The country's Federal Statistics Office said the economy had shown "continued moderate growth", helped by increased domestic consumption.But it added foreign trade "had a downward effect on growth, because the increase in imports was markedly larger than that of exports".The French economy also grew by 0.3% in the same period, but this marked a pick-up from zero growth previously.
The French statistics agency INSEE said a rise in imports had also weighed on the country's growth rate.
But it added that the economy saw an increase in household spending, and that production of goods and services picked up.
"The [GDP] figure... confirms that we have left in 2015 the period of very weak growth that France had experienced since 2011," said French Finance Minister Michel Sapin.
Among the other major eurozone economies, the growth rate in Italy slowed to 0.2%, which was worse than expected, while the Spanish economy grew by 0.8%