This paper uses micro‐data from the World Bank Enterprise Surveys 2002–06 to investigate how foreign ownership affects the likelihood of manufacturers in developing countries to export and/or import either directly or indirectly. Applying propensity score matching to control for differences across firms in terms of labour productivity and other characteristics, we find that foreign ownership raises the propensity of a firm to export by over 17 and the propensity to import by more than 13 percentage points. The effects are even bigger for countries with the lowest per capita income and institutional quality.