Columbia University’s Industrial Engineering and Operations Research is a multi-disciplinary applied science program utilizing mathematical models to improve decision-making in complex environments. Our faculty members are widely recognized for their foundational contributions to optimization, statistics, machine learning, and probability. We lead cutting-edge research in healthcare operations, financial engineering, supply chain management, and market design. We offer multiple undergraduate programs and various graduate programs leading to a degree of Master of Science (MS) and Doctor of Philosophy (PhD).