: This paper tries to assess empirically the relationship between export diversification and economic growth on selected countries in ASEAN. Using annual data or time-series over the period 1989 to 2010 and econometric techniques (Granger causality and cointegration) are applied to test the relationship between export diversification and economic growth. The result show that, in case of Indonesia and Malaysia, there are exist uni-directional causality from GDP to export diversification. For Singapore and Thailand, the results show that there are no causal relationship between export diversification and economic growth
