This study aims to identify, define, and prioritize ethical concerns related to big data analytics as they pertain to individuals, organizations and society. Big data analytics is a fast evolving phenomenon with poorly understood consequences. Identifying and exploring its ethical implications is therefore important for both users of big data, and for those who are the target of its use. Our research design is based on a Delphi study of academic and practitioner experts who illuminate the ethical concerns as-sociated with big data analytics. Our emerging empirical insights thereby provide both, an important theoretical contribution to the information systems literature, as well as informing managerial and policy guidelines for implementing, and ethically benefiting from, big data analytics.