This paper summarizes the empirical evidence on the role of justice in economic development, conflict, and trust in institutions. It finds that justice institutions play a significant role in economic development, particularly through their impact on credit markets and firm growth, the protection of vulnerable populations, their capacity to deter violence, and their influence over people's trust in formal institutions. The paper then considers the promise of administrative data, machine learning, and randomized controlled trials to enhance the efficiency, access, and quality of justice. The paper concludes by discussing new avenues for research and the potential for data to improve the functioning of justice systems in the age of COVID-19.