This article explains how the global governance of international migration has evolved as a policy issue on the international agenda over the past decade while noting that there is still no consensus on whether global governance is really required, what type of global governance would be appropriate, and how it should develop. The article reviews a series of policy options that have been proposed to fill the governance gap in international migration; namely, to create a new agency, to designate a lead agency, to bring the International Organization for Migration into the UN system, a coordination model, a leadership model, a World Trade Organization model, and an evolutionary model.