Professionalism is part of the milestone program instituted by the Accreditation Council for Graduate Medical Education and the American Board of Radiology. A unique feature of ultrasound professionalism is the relationship between the radiologist and the sonographer. Because this relationship is important for sonographic quality and ultimately patient outcome, residents should be trained to achieve an optimal professional relationship with sonographers. This article describes milestones for ultrasound professionalism and suggests methods of implementation.