This scoping review explored university supervisors' roles, responsibilities, challenges, and changes over 70 years. Using the PRISMA-ScR method and 90 analyzed publications, the results yielded articles from every decade and from educator preparation programs across the United States. The findings highlight historical perspectives and controversies surrounding field supervision. These include influences throughout the decades from areas outside education, including psychology and business. Finally, recommendations for preparing and elevating the role of university supervisors are shared.