This article has examined the effect of economic complexity on services export diversification. It has built on two arguments. The first one draws from Eichengreen and Gupta (2013b) and states that countries that export complex products would have a high penetration in the international goods market, and establish a network that could be exploited to expand their range of services export items. Second, by inducing higher inflows of foreign direct investment (FDI), greater economic complexity could contribute to fostering services export diversification. The empirical analysis supported these two arguments. The implications of the outcomes are discussed in the conclusion.