The relationship between export diversification and economic growth has been widely debated in the economic literature, although a clear consensus remains elusive. This study examines the dynamic relationship between export diversification and economic growth in Tunisia, using an autoregressive distributed lag (ARDL) bounds testing approach on annual data from 1991 to 2017. The results indicate that growth driven by export diversification is significant for Tunisia. The econometric analysis shows that investment, export diversification, an increase in exported products and quality of life have a positive impact on economic growth, while financial development has a negative impact in the long run. In the short run, however, the impact of export diversification is more limited. These findings have important economic policy implications for policymakers seeking to promote export diversification, economic stability and sustainable growth.