The linkages between industrial policy and trade policy are explored in this article. The experience of various developed and developing countries is cited, with particular emphasis upon ASEAN. The importance of a trade policy that enables industrial sectors to respond to changing comparative advantages is stressed and proposals are made ensuring better means of identifying the bases of comparative advantages in developing countries, using more homogeneous classes of factor endowments ?not only labour and capital generally, but human capital, physical capital, and informa tion-based endowments which can help to identify the probable evolution of industry structure in developing countries. If the role of industrial policy is to be coherent, it is argued that it should be complementary to trade policy, assisting adjustment and compensating for market failures which impede outward-oriented development strategy.