In this study, the causality between foreign direct investment, trade openness andeconomic growth was investigated. The analysis covers 81 observations during the 20years between 1998Q1-2018Q1 for export, import, FDI and GDP of Turkey. ADF unitroot, Engel Granger co-integration, Granger causality, VAR Decomposition, VARImpulse- Response tests and techniques were employed in the analysis. According to theresults, economic growth is explained by GDP at a 75% level, by import at a 15% level,by foreign direct investments at a 5% level and by export at a 5% level. However, theimpacts of foreign direct investment and export on economic growth are not statisticallysignificant. GDP and import are statistically significant on economic growth in the firsttwo quarters, but insignificant for subsequent quarters. There is a uni-directionalcausality from import to economic growth. As a result, import and GDP are thedeterminants of economic growth in very short-term, while the effects of foreign directinvestments and exports on growth are insignificant in Turkey.