Opacity (the converse of transparency) has only recently received attention as it has been considered to be linked to a series of financial crises. This study utilizes Price Waterhouse Cooper’s 2001 opacity indices and capital flow data from the World Bank and Bank for International Settlement. Capital flows are disaggregated into categories of foreign direct investment flows by multinational enterprises, portfolio capital flows and international bank lending. Regression analysis supports the idea that higher opacity leads to a reduction in capital flows, in general. The results have policy-relevant implications as countries wishing to enhance capital inflows need to reduce the level of opacity in decision-making. More interestingly, however, the investigation with opacity sub- indices shows higher capital flows, in general, were associated with higher opacity in corruption and regulatory indices corroborating some existing evidence in the FDI literature that opacity will influence the choice of entry mode rather than the actual level of flows. In addition, the paper supports the notion that Bank Assurance mechanisms are highly desirable with regard to international bank lending, as the nature of these flows means that they are more influenced by general levels of opacity and are less responsive than FDI and portfolio flows.