Accelerating and growth effect of trade openness are controversial subjects that has been subjected to a whole literature. This paper investigates whether trade openness accelerates income per capita convergence process across OIC countries. For this purpose, we used convergence-growth equation that include three trade openness measures ie intra-trade openness, extra (outside)-trade openness and overall trade openness and dynamic GMM- SYS panel data estimator. We find that growth effect of trade openness varies by different .
