The jury system is one of the oldest deliberative democratic bodies, and it has a robust historical record spanning hundreds of years in numerous countries. As scholars and civic reformers envision a democratic global public sphere and international institutions, we advocate for the inclusion of juries of lay citizens as a means of administering justice and promoting deliberative norms. Focusing specifically on the case of the International Criminal Court, we show how juries could bolster that institution's legitimacy by promoting public trust, increasing procedural fairness, foregrounding deliberative reasoning, and embodying democratic values. Juries would present novel logistical, philosophical, and legal problems, but we show how each of these might be overcome to make juries a viable element of global governance.