This study investigates the validity of Turkey's export-led growth hypothesis (ELG) with the time domain and frequency domain causality methods using quarterly data for the 1998Q1–2021Q4 period. We also test whether government expenditure is an important channel within the framework of the ELG hypothesis. The time-domain causality results indicate that the feedback and import-led growth (ILG) hypotheses are valid. The frequency-domain causality results imply that the hypothesis of the growth-led export (GLE) is valid. Therefore, the time and frequency domain causality findings indicate that the ELG hypothesis is invalid. Turkey, which has followed an export-oriented industrialization strategy since 1980, is far from successful in this policy. Therefore, policymakers need to revise Turkey's foreign trade strategy. [ABSTRACT FROM AUTHOR]